diff --git a/appinfo/routes.php b/appinfo/routes.php
index aade39a44..9f337bbc1 100644
--- a/appinfo/routes.php
+++ b/appinfo/routes.php
@@ -135,6 +135,7 @@
 		['name' => 'ApiColumns#createTextColumn', 'url' => '/api/2/columns/text', 'verb' => 'POST'],
 		['name' => 'ApiColumns#createSelectionColumn', 'url' => '/api/2/columns/selection', 'verb' => 'POST'],
 		['name' => 'ApiColumns#createDatetimeColumn', 'url' => '/api/2/columns/datetime', 'verb' => 'POST'],
+		['name' => 'ApiColumns#createUsergroupColumn', 'url' => '/api/2/columns/usergroup', 'verb' => 'POST'],
 
 		['name' => 'ApiFavorite#create', 'url' => '/api/2/favorites/{nodeType}/{nodeId}', 'verb' => 'POST', 'requirements' => ['nodeType' => '(\d+)', 'nodeId' => '(\d+)']],
 		['name' => 'ApiFavorite#destroy', 'url' => '/api/2/favorites/{nodeType}/{nodeId}', 'verb' => 'DELETE', 'requirements' => ['nodeType' => '(\d+)', 'nodeId' => '(\d+)']],
diff --git a/lib/Capabilities.php b/lib/Capabilities.php
index 1b8346fc4..493da10b9 100644
--- a/lib/Capabilities.php
+++ b/lib/Capabilities.php
@@ -62,7 +62,8 @@ public function getCapabilities(): array {
 				'version' => $this->appManager->getAppVersion('tables'),
 				'apiVersions' => [
 					'1.0',
-					'2.0'
+					'2.0',
+					'2.1',
 				],
 				'features' => [
 					'favorite',
@@ -81,6 +82,7 @@ public function getCapabilities(): array {
 					'datetime',
 					'datetime-date',
 					'datetime-time',
+					'usergroup',
 				]
 			],
 		];
diff --git a/lib/Controller/AOCSController.php b/lib/Controller/AOCSController.php
index 54cd1411f..4f3d8720b 100644
--- a/lib/Controller/AOCSController.php
+++ b/lib/Controller/AOCSController.php
@@ -56,7 +56,7 @@ protected function handlePermissionError(PermissionError $e): DataResponse {
 	 * @return DataResponse<Http::STATUS_NOT_FOUND, array{message: string}, array{}>
 	 */
 	protected function handleNotFoundError(NotFoundError $e): DataResponse {
-		$this->logger->warning('A not found error occurred: ['. $e->getCode() . ']' . $e->getMessage());
+		$this->logger->info('A not found error occurred: ['. $e->getCode() . ']' . $e->getMessage());
 		return new DataResponse(['message' => $this->n->t('A not found error occurred. More details can be found in the logs. Please reach out to your administration.')], Http::STATUS_NOT_FOUND);
 	}
 
diff --git a/lib/Controller/Api1Controller.php b/lib/Controller/Api1Controller.php
index 7a2f33666..d70a0f649 100644
--- a/lib/Controller/Api1Controller.php
+++ b/lib/Controller/Api1Controller.php
@@ -155,7 +155,7 @@ public function showScheme(int $tableId): DataResponse {
 			$message = ['message' => $e->getMessage()];
 			return new DataResponse($message, Http::STATUS_FORBIDDEN);
 		} catch (NotFoundError $e) {
-			$this->logger->warning('A not found error occurred: ' . $e->getMessage());
+			$this->logger->info('A not found error occurred: ' . $e->getMessage());
 			$message = ['message' => $e->getMessage()];
 			return new DataResponse($message, Http::STATUS_NOT_FOUND);
 		} catch (InternalError|Exception $e) {
@@ -187,7 +187,7 @@ public function getTable(int $tableId): DataResponse {
 			$message = ['message' => $e->getMessage()];
 			return new DataResponse($message, Http::STATUS_FORBIDDEN);
 		} catch (NotFoundError $e) {
-			$this->logger->warning('A not found error occurred: ' . $e->getMessage());
+			$this->logger->info('A not found error occurred: ' . $e->getMessage());
 			$message = ['message' => $e->getMessage()];
 			return new DataResponse($message, Http::STATUS_NOT_FOUND);
 		} catch (InternalError|Exception $e) {
@@ -222,7 +222,7 @@ public function updateTable(int $tableId, ?string $title = null, ?string $emoji
 			$message = ['message' => $e->getMessage()];
 			return new DataResponse($message, Http::STATUS_FORBIDDEN);
 		} catch (NotFoundError $e) {
-			$this->logger->warning('A not found error occurred: ' . $e->getMessage());
+			$this->logger->info('A not found error occurred: ' . $e->getMessage());
 			$message = ['message' => $e->getMessage()];
 			return new DataResponse($message, Http::STATUS_NOT_FOUND);
 		} catch (InternalError|Exception $e) {
@@ -254,7 +254,7 @@ public function deleteTable(int $tableId): DataResponse {
 			$message = ['message' => $e->getMessage()];
 			return new DataResponse($message, Http::STATUS_FORBIDDEN);
 		} catch (NotFoundError $e) {
-			$this->logger->warning('A not found error occurred: ' . $e->getMessage());
+			$this->logger->info('A not found error occurred: ' . $e->getMessage());
 			$message = ['message' => $e->getMessage()];
 			return new DataResponse($message, Http::STATUS_NOT_FOUND);
 		} catch (InternalError|Exception $e) {
@@ -288,7 +288,7 @@ public function indexViews(int $tableId): DataResponse {
 			$message = ['message' => $e->getMessage()];
 			return new DataResponse($message, Http::STATUS_FORBIDDEN);
 		} catch (NotFoundError $e) {
-			$this->logger->warning('A not found error occurred: ' . $e->getMessage());
+			$this->logger->info('A not found error occurred: ' . $e->getMessage());
 			$message = ['message' => $e->getMessage()];
 			return new DataResponse($message, Http::STATUS_NOT_FOUND);
 		} catch (InternalError|Exception $e) {
@@ -355,7 +355,7 @@ public function getView(int $viewId): DataResponse {
 			$message = ['message' => $e->getMessage()];
 			return new DataResponse($message, Http::STATUS_INTERNAL_SERVER_ERROR);
 		} catch (NotFoundError $e) {
-			$this->logger->warning('A not found error occurred: ' . $e->getMessage());
+			$this->logger->info('A not found error occurred: ' . $e->getMessage());
 			$message = ['message' => $e->getMessage()];
 			return new DataResponse($message, Http::STATUS_NOT_FOUND);
 		}
@@ -416,7 +416,7 @@ public function deleteView(int $viewId): DataResponse {
 			$message = ['message' => $e->getMessage()];
 			return new DataResponse($message, Http::STATUS_INTERNAL_SERVER_ERROR);
 		} catch (NotFoundError $e) {
-			$this->logger->warning('A not found error occurred: ' . $e->getMessage());
+			$this->logger->info('A not found error occurred: ' . $e->getMessage());
 			$message = ['message' => $e->getMessage()];
 			return new DataResponse($message, Http::STATUS_NOT_FOUND);
 		}
@@ -450,7 +450,7 @@ public function getShare(int $shareId): DataResponse {
 			$message = ['message' => $e->getMessage()];
 			return new DataResponse($message, Http::STATUS_INTERNAL_SERVER_ERROR);
 		} catch (NotFoundError $e) {
-			$this->logger->warning('A not found error occurred: ' . $e->getMessage());
+			$this->logger->info('A not found error occurred: ' . $e->getMessage());
 			$message = ['message' => $e->getMessage()];
 			return new DataResponse($message, Http::STATUS_NOT_FOUND);
 		}
@@ -549,7 +549,7 @@ public function createShare(
 			$message = ['message' => $e->getMessage()];
 			return new DataResponse($message, Http::STATUS_INTERNAL_SERVER_ERROR);
 		} catch (NotFoundError $e) {
-			$this->logger->warning('A not found error occurred: ' . $e->getMessage());
+			$this->logger->info('A not found error occurred: ' . $e->getMessage());
 			$message = ['message' => $e->getMessage()];
 			return new DataResponse($message, Http::STATUS_NOT_FOUND);
 		}
@@ -581,7 +581,7 @@ public function deleteShare(int $shareId): DataResponse {
 			$message = ['message' => $e->getMessage()];
 			return new DataResponse($message, Http::STATUS_INTERNAL_SERVER_ERROR);
 		} catch (NotFoundError $e) {
-			$this->logger->warning('A not found error occurred: ' . $e->getMessage());
+			$this->logger->info('A not found error occurred: ' . $e->getMessage());
 			$message = ['message' => $e->getMessage()];
 			return new DataResponse($message, Http::STATUS_NOT_FOUND);
 		}
@@ -615,7 +615,7 @@ public function updateSharePermissions(int $shareId, string $permissionType, boo
 			$message = ['message' => $e->getMessage()];
 			return new DataResponse($message, Http::STATUS_INTERNAL_SERVER_ERROR);
 		} catch (NotFoundError $e) {
-			$this->logger->warning('A not found error occurred: ' . $e->getMessage());
+			$this->logger->info('A not found error occurred: ' . $e->getMessage());
 			$message = ['message' => $e->getMessage()];
 			return new DataResponse($message, Http::STATUS_NOT_FOUND);
 		}
@@ -660,7 +660,7 @@ public function updateShareDisplayMode(int $shareId, int $displayMode, string $t
 			$message = ['message' => $e->getMessage()];
 			return new DataResponse($message, Http::STATUS_INTERNAL_SERVER_ERROR);
 		} catch (NotFoundError $e) {
-			$this->logger->warning('A not found error occurred: ' . $e->getMessage());
+			$this->logger->info('A not found error occurred: ' . $e->getMessage());
 			$message = ['message' => $e->getMessage()];
 			return new DataResponse($message, Http::STATUS_NOT_FOUND);
 		} catch (PermissionError $e) {
@@ -729,7 +729,7 @@ public function indexViewColumns(int $viewId): DataResponse {
 			$message = ['message' => $e->getMessage()];
 			return new DataResponse($message, Http::STATUS_INTERNAL_SERVER_ERROR);
 		} catch (NotFoundError $e) {
-			$this->logger->warning('A not found error occurred: ' . $e->getMessage());
+			$this->logger->info('A not found error occurred: ' . $e->getMessage());
 			$message = ['message' => $e->getMessage()];
 			return new DataResponse($message, Http::STATUS_NOT_FOUND);
 		}
@@ -745,7 +745,7 @@ public function indexViewColumns(int $viewId): DataResponse {
 	 * @param int|null $tableId Table ID
 	 * @param int|null $viewId View ID
 	 * @param string $title Title
-	 * @param 'text'|'number'|'datetime'|'select' $type Column main type
+	 * @param 'text'|'number'|'datetime'|'select'|'usergroup' $type Column main type
 	 * @param string|null $subtype Column sub type
 	 * @param bool $mandatory Is the column mandatory
 	 * @param string|null $description Description
@@ -761,6 +761,11 @@ public function indexViewColumns(int $viewId): DataResponse {
 	 * @param string|null $selectionOptions Options for a selection (json array{id: int, label: string})
 	 * @param string|null $selectionDefault Default option IDs for a selection (json int[])
 	 * @param string|null $datetimeDefault Default value, if column is datetime
+	 * @param string|null $usergroupDefault Default value, if column is usergroup (json array{id: string, type: int})
+	 * @param bool|null $usergroupMultipleItems Can select multiple users or/and groups, if column is usergroup
+	 * @param bool|null $usergroupSelectUsers Can select users, if column type is usergroup
+	 * @param bool|null $usergroupSelectGroups Can select groups, if column type is usergroup
+	 * @param bool|null $usergroupShowUserStatus Whether to show the user's status, if column type is usergroup
 	 * @param int[]|null $selectedViewIds View IDs where this column should be added to be presented
 	 *
 	 * @return DataResponse<Http::STATUS_OK, TablesColumn, array{}>|DataResponse<Http::STATUS_FORBIDDEN|Http::STATUS_INTERNAL_SERVER_ERROR|Http::STATUS_NOT_FOUND, array{message: string}, array{}>
@@ -792,6 +797,13 @@ public function createColumn(
 		?string $selectionDefault = '',
 
 		?string $datetimeDefault = '',
+
+		?string $usergroupDefault = '',
+		?bool $usergroupMultipleItems = null,
+		?bool $usergroupSelectUsers = null,
+		?bool $usergroupSelectGroups = null,
+		?bool $usergroupShowUserStatus = null,
+
 		?array $selectedViewIds = []
 	): DataResponse {
 		try {
@@ -820,6 +832,13 @@ public function createColumn(
 				$selectionDefault,
 
 				$datetimeDefault,
+
+				$usergroupDefault,
+				$usergroupMultipleItems,
+				$usergroupSelectUsers,
+				$usergroupSelectGroups,
+				$usergroupShowUserStatus,
+
 				$selectedViewIds
 			)->jsonSerialize());
 		} catch (PermissionError $e) {
@@ -831,7 +850,7 @@ public function createColumn(
 			$message = ['message' => $e->getMessage()];
 			return new DataResponse($message, Http::STATUS_INTERNAL_SERVER_ERROR);
 		} catch (DoesNotExistException $e) {
-			$this->logger->warning('A not found error occurred: ' . $e->getMessage());
+			$this->logger->info('A not found error occurred: ' . $e->getMessage());
 			$message = ['message' => $e->getMessage()];
 			return new DataResponse($message, Http::STATUS_NOT_FOUND);
 		}
@@ -861,6 +880,11 @@ public function createColumn(
 	 * @param string|null $selectionOptions Options for a selection (json array{id: int, label: string})
 	 * @param string|null $selectionDefault Default option IDs for a selection (json int[])
 	 * @param string|null $datetimeDefault Default value, if column is datetime
+	 * @param string|null $usergroupDefault Default value, if column is usergroup
+	 * @param bool|null $usergroupMultipleItems Can select multiple users or/and groups, if column is usergroup
+	 * @param bool|null $usergroupSelectUsers Can select users, if column type is usergroup
+	 * @param bool|null $usergroupSelectGroups Can select groups, if column type is usergroup
+	 * @param bool|null $usergroupShowUserStatus Whether to show the user's status, if column type is usergroup
 	 *
 	 * @return DataResponse<Http::STATUS_OK, TablesColumn, array{}>|DataResponse<Http::STATUS_INTERNAL_SERVER_ERROR, array{message: string}, array{}>
 	 *
@@ -887,7 +911,14 @@ public function updateColumn(
 		?string $selectionOptions,
 		?string $selectionDefault,
 
-		?string $datetimeDefault
+		?string $datetimeDefault,
+
+		?string $usergroupDefault,
+		?bool $usergroupMultipleItems,
+		?bool $usergroupSelectUsers,
+		?bool $usergroupSelectGroups,
+		?bool $usergroupShowUserStatus,
+
 	): DataResponse {
 		try {
 			$item = $this->columnService->update(
@@ -913,7 +944,13 @@ public function updateColumn(
 
 				$selectionOptions,
 				$selectionDefault,
-				$datetimeDefault
+				$datetimeDefault,
+
+				$usergroupDefault,
+				$usergroupMultipleItems,
+				$usergroupSelectUsers,
+				$usergroupSelectGroups,
+				$usergroupShowUserStatus,
 			);
 			return new DataResponse($item->jsonSerialize());
 		} catch (InternalError $e) {
@@ -945,7 +982,7 @@ public function getColumn(int $columnId): DataResponse {
 			$message = ['message' => $e->getMessage()];
 			return new DataResponse($message, Http::STATUS_FORBIDDEN);
 		} catch (NotFoundError $e) {
-			$this->logger->warning('A not found error occurred: ' . $e->getMessage());
+			$this->logger->info('A not found error occurred: ' . $e->getMessage());
 			$message = ['message' => $e->getMessage()];
 			return new DataResponse($message, Http::STATUS_NOT_FOUND);
 		} catch (InternalError|Exception $e) {
@@ -977,7 +1014,7 @@ public function deleteColumn(int $columnId): DataResponse {
 			$message = ['message' => $e->getMessage()];
 			return new DataResponse($message, Http::STATUS_FORBIDDEN);
 		} catch (NotFoundError $e) {
-			$this->logger->warning('A not found error occurred: ' . $e->getMessage());
+			$this->logger->info('A not found error occurred: ' . $e->getMessage());
 			$message = ['message' => $e->getMessage()];
 			return new DataResponse($message, Http::STATUS_NOT_FOUND);
 		} catch (InternalError|Exception $e) {
@@ -1194,7 +1231,7 @@ public function getRow(int $rowId): DataResponse {
 			$message = ['message' => $e->getMessage()];
 			return new DataResponse($message, Http::STATUS_INTERNAL_SERVER_ERROR);
 		} catch (NotFoundError $e) {
-			$this->logger->warning('A not found error occurred: ' . $e->getMessage());
+			$this->logger->info('A not found error occurred: ' . $e->getMessage());
 			$message = ['message' => $e->getMessage()];
 			return new DataResponse($message, Http::STATUS_NOT_FOUND);
 		}
@@ -1270,7 +1307,7 @@ public function deleteRow(int $rowId): DataResponse {
 			$message = ['message' => $e->getMessage()];
 			return new DataResponse($message, Http::STATUS_INTERNAL_SERVER_ERROR);
 		} catch (NotFoundError $e) {
-			$this->logger->warning('A not found error occurred: ' . $e->getMessage());
+			$this->logger->info('A not found error occurred: ' . $e->getMessage());
 			$message = ['message' => $e->getMessage()];
 			return new DataResponse($message, Http::STATUS_NOT_FOUND);
 		}
@@ -1303,7 +1340,7 @@ public function deleteRowByView(int $rowId, int $viewId): DataResponse {
 			$message = ['message' => $e->getMessage()];
 			return new DataResponse($message, Http::STATUS_INTERNAL_SERVER_ERROR);
 		} catch (NotFoundError $e) {
-			$this->logger->warning('A not found error occurred: ' . $e->getMessage());
+			$this->logger->info('A not found error occurred: ' . $e->getMessage());
 			$message = ['message' => $e->getMessage()];
 			return new DataResponse($message, Http::STATUS_NOT_FOUND);
 		}
@@ -1336,7 +1373,7 @@ public function importInTable(int $tableId, string $path, bool $createMissingCol
 			$message = ['message' => $e->getMessage()];
 			return new DataResponse($message, Http::STATUS_INTERNAL_SERVER_ERROR);
 		} catch (NotFoundError|DoesNotExistException $e) {
-			$this->logger->warning('A not found error occurred: ' . $e->getMessage());
+			$this->logger->info('A not found error occurred: ' . $e->getMessage());
 			$message = ['message' => $e->getMessage()];
 			return new DataResponse($message, Http::STATUS_NOT_FOUND);
 		}
@@ -1369,7 +1406,7 @@ public function importInView(int $viewId, string $path, bool $createMissingColum
 			$message = ['message' => $e->getMessage()];
 			return new DataResponse($message, Http::STATUS_INTERNAL_SERVER_ERROR);
 		} catch (NotFoundError|DoesNotExistException $e) {
-			$this->logger->warning('A not found error occurred: ' . $e->getMessage());
+			$this->logger->info('A not found error occurred: ' . $e->getMessage());
 			$message = ['message' => $e->getMessage()];
 			return new DataResponse($message, Http::STATUS_NOT_FOUND);
 		}
@@ -1411,7 +1448,7 @@ public function createTableShare(int $tableId, string $receiver, string $receive
 			$message = ['message' => $e->getMessage()];
 			return new DataResponse($message, Http::STATUS_INTERNAL_SERVER_ERROR);
 		} catch (NotFoundError $e) {
-			$this->logger->warning('A not found error occurred: ' . $e->getMessage());
+			$this->logger->info('A not found error occurred: ' . $e->getMessage());
 			$message = ['message' => $e->getMessage()];
 			return new DataResponse($message, Http::STATUS_NOT_FOUND);
 		}
@@ -1426,7 +1463,7 @@ public function createTableShare(int $tableId, string $receiver, string $receive
 	 *
 	 * @param int $tableId Table ID
 	 * @param string $title Title
-	 * @param 'text'|'number'|'datetime'|'select' $type Column main type
+	 * @param 'text'|'number'|'datetime'|'select'|'usergroup' $type Column main type
 	 * @param string|null $subtype Column sub type
 	 * @param bool $mandatory Is the column mandatory
 	 * @param string|null $description Description
@@ -1442,6 +1479,11 @@ public function createTableShare(int $tableId, string $receiver, string $receive
 	 * @param string|null $selectionOptions Options for a selection (json array{id: int, label: string})
 	 * @param string|null $selectionDefault Default option IDs for a selection (json int[])
 	 * @param string|null $datetimeDefault Default value, if column is datetime
+	 * @param string|null $usergroupDefault Default value, if column is usergroup
+	 * @param bool|null $usergroupMultipleItems Can select multiple users or/and groups, if column is usergroup
+	 * @param bool|null $usergroupSelectUsers Can select users, if column type is usergroup
+	 * @param bool|null $usergroupSelectGroups Can select groups, if column type is usergroup
+	 * @param bool|null $usergroupShowUserStatus Whether to show the user's status, if column type is usergroup
 	 * @param int[]|null $selectedViewIds View IDs where this column should be added to be presented
 	 *
 	 * @return DataResponse<Http::STATUS_OK, TablesColumn, array{}>|DataResponse<Http::STATUS_FORBIDDEN|Http::STATUS_INTERNAL_SERVER_ERROR|Http::STATUS_NOT_FOUND, array{message: string}, array{}>
@@ -1473,6 +1515,12 @@ public function createTableColumn(
 		?string $selectionDefault = '',
 
 		?string $datetimeDefault = '',
+
+		?string $usergroupDefault = '',
+		?bool $usergroupMultipleItems = null,
+		?bool $usergroupSelectUsers = null,
+		?bool $usergroupSelectGroups = null,
+		?bool $usergroupShowUserStatus = null,
 		?array $selectedViewIds = []
 	): DataResponse {
 		try {
@@ -1501,6 +1549,13 @@ public function createTableColumn(
 				$selectionDefault,
 
 				$datetimeDefault,
+
+				$usergroupDefault,
+				$usergroupMultipleItems,
+				$usergroupSelectUsers,
+				$usergroupSelectGroups,
+				$usergroupShowUserStatus,
+
 				$selectedViewIds
 			);
 			return new DataResponse($item->jsonSerialize());
@@ -1513,7 +1568,7 @@ public function createTableColumn(
 			$message = ['message' => $e->getMessage()];
 			return new DataResponse($message, Http::STATUS_INTERNAL_SERVER_ERROR);
 		} catch (DoesNotExistException $e) {
-			$this->logger->warning('A not found error occurred: ' . $e->getMessage());
+			$this->logger->info('A not found error occurred: ' . $e->getMessage());
 			$message = ['message' => $e->getMessage()];
 			return new DataResponse($message, Http::STATUS_NOT_FOUND);
 		}
diff --git a/lib/Controller/ApiColumnsController.php b/lib/Controller/ApiColumnsController.php
index edaeb8422..163cf869b 100644
--- a/lib/Controller/ApiColumnsController.php
+++ b/lib/Controller/ApiColumnsController.php
@@ -140,6 +140,11 @@ public function createNumberColumn(int $baseNodeId, string $title, ?float $numbe
 			null,
 			null,
 			null,
+			null,
+			null,
+			null,
+			null,
+			null,
 			$selectedViewIds
 		);
 		return new DataResponse($column->jsonSerialize());
@@ -195,6 +200,11 @@ public function createTextColumn(int $baseNodeId, string $title, ?string $textDe
 			null,
 			null,
 			null,
+			null,
+			null,
+			null,
+			null,
+			null,
 			$selectedViewIds
 		);
 		return new DataResponse($column->jsonSerialize());
@@ -249,6 +259,11 @@ public function createSelectionColumn(int $baseNodeId, string $title, string $se
 			$selectionOptions,
 			$selectionDefault,
 			null,
+			null,
+			null,
+			null,
+			null,
+			null,
 			$selectedViewIds
 		);
 		return new DataResponse($column->jsonSerialize());
@@ -302,6 +317,70 @@ public function createDatetimeColumn(int $baseNodeId, string $title, ?string $da
 			null,
 			null,
 			$datetimeDefault,
+			null,
+			null,
+			null,
+			null,
+			null,
+			$selectedViewIds
+		);
+		return new DataResponse($column->jsonSerialize());
+	}
+
+	/**
+	 * [api v2] Create new usergroup column
+	 *
+	 * @NoAdminRequired
+	 *
+	 * @param int $baseNodeId Context of the column creation
+	 * @param string $title Title
+	 * @param string|null $usergroupDefault Json array{id: string, type: int}, eg [{"id": "admin", "type": 0}, {"id": "user1", "type": 0}]
+	 * @param boolean $usergroupMultipleItems Whether you can select multiple users or/and groups
+	 * @param boolean $usergroupSelectUsers Whether you can select users
+	 * @param boolean $usergroupSelectGroups Whether you can select groups
+	 * @param boolean $showUserStatus Whether to show the user's status
+	 * @param string|null $description Description
+	 * @param int[]|null $selectedViewIds View IDs where this columns should be added
+	 * @param boolean $mandatory Is mandatory
+	 * @param 'table'|'view' $baseNodeType Context type of the column creation
+	 * @return DataResponse<Http::STATUS_OK, TablesColumn, array{}>|DataResponse<Http::STATUS_FORBIDDEN|Http::STATUS_INTERNAL_SERVER_ERROR|Http::STATUS_NOT_FOUND, array{message: string}, array{}>
+	 *
+	 * 200: Column created
+	 * 403: No permission
+	 * 404: Not found
+	 * @throws InternalError
+	 * @throws NotFoundError
+	 * @throws PermissionError
+	 */
+	public function createUsergroupColumn(int $baseNodeId, string $title, ?string $usergroupDefault, bool $usergroupMultipleItems = null, bool $usergroupSelectUsers = null, bool $usergroupSelectGroups = null, bool $showUserStatus = null, string $description = null, ?array $selectedViewIds = [], bool $mandatory = false, string $baseNodeType = 'table'): DataResponse {
+		$tableId = $baseNodeType === 'table' ? $baseNodeId : null;
+		$viewId = $baseNodeType === 'view' ? $baseNodeId : null;
+		$column = $this->service->create(
+			$this->userId,
+			$tableId,
+			$viewId,
+			'usergroup',
+			null,
+			$title,
+			$mandatory,
+			$description,
+			null,
+			null,
+			null,
+			null,
+			null,
+			null,
+			null,
+			null,
+			null,
+			null,
+			null,
+			null,
+			$usergroupDefault,
+			$usergroupMultipleItems,
+			$usergroupSelectUsers,
+			$usergroupSelectGroups,
+			$showUserStatus,
 			$selectedViewIds
 		);
 		return new DataResponse($column->jsonSerialize());
diff --git a/lib/Controller/ApiTablesController.php b/lib/Controller/ApiTablesController.php
index d246636d5..1ac5cd46e 100644
--- a/lib/Controller/ApiTablesController.php
+++ b/lib/Controller/ApiTablesController.php
@@ -157,6 +157,13 @@ public function createFromScheme(string $title, string $emoji, string $descripti
 					$column['selectionDefault'],
 
 					$column['datetimeDefault'],
+
+					$column['usergroupDefault'],
+					$column['usergroupMultipleItems'],
+					$column['usergroupSelectUsers'],
+					$column['usergroupSelectGroups'],
+					$column['showUserStatus'],
+
 					[],
 				);
 			};
diff --git a/lib/Controller/ColumnController.php b/lib/Controller/ColumnController.php
index 41f49aa4f..8c150d698 100644
--- a/lib/Controller/ColumnController.php
+++ b/lib/Controller/ColumnController.php
@@ -92,6 +92,13 @@ public function create(
 		?string $selectionDefault,
 
 		?string $datetimeDefault,
+
+		?string $usergroupDefault,
+		?bool $usergroupMultipleItems,
+		?bool $usergroupSelectUsers,
+		?bool $usergroupSelectGroups,
+		?bool $showUserStatus,
+
 		?array $selectedViewIds
 	): DataResponse {
 		return $this->handleError(function () use (
@@ -118,6 +125,13 @@ public function create(
 			$selectionDefault,
 
 			$datetimeDefault,
+
+			$usergroupDefault,
+			$usergroupMultipleItems,
+			$usergroupSelectUsers,
+			$usergroupSelectGroups,
+			$showUserStatus,
+
 			$selectedViewIds) {
 			return $this->service->create(
 				$this->userId,
@@ -144,6 +158,13 @@ public function create(
 				$selectionDefault,
 
 				$datetimeDefault,
+				
+				$usergroupDefault,
+				$usergroupMultipleItems,
+				$usergroupSelectUsers,
+				$usergroupSelectGroups,
+				$showUserStatus,
+
 				$selectedViewIds);
 		});
 	}
@@ -174,7 +195,13 @@ public function update(
 		?string $selectionOptions,
 		?string $selectionDefault,
 
-		?string $datetimeDefault
+		?string $datetimeDefault,
+
+		?string $usergroupDefault,
+		?bool $usergroupMultipleItems,
+		?bool $usergroupSelectUsers,
+		?bool $usergroupSelectGroups,
+		?bool $showUserStatus
 	): DataResponse {
 		return $this->handleError(function () use (
 			$id,
@@ -199,7 +226,13 @@ public function update(
 			$selectionOptions,
 			$selectionDefault,
 
-			$datetimeDefault
+			$datetimeDefault,
+
+			$usergroupDefault,
+			$usergroupMultipleItems,
+			$usergroupSelectUsers,
+			$usergroupSelectGroups,
+			$showUserStatus
 		) {
 			return $this->service->update(
 				$id,
@@ -225,7 +258,14 @@ public function update(
 				$selectionOptions,
 				$selectionDefault,
 
-				$datetimeDefault);
+				$datetimeDefault,
+
+				$usergroupDefault,
+				$usergroupMultipleItems,
+				$usergroupSelectUsers,
+				$usergroupSelectGroups,
+				$showUserStatus
+			);
 		});
 	}
 
diff --git a/lib/Db/Column.php b/lib/Db/Column.php
index a59fd586b..ddaae5b15 100644
--- a/lib/Db/Column.php
+++ b/lib/Db/Column.php
@@ -60,6 +60,16 @@
  * @method setSelectionDefault(?string $selectionDefault)
  * @method getDatetimeDefault(): string
  * @method setDatetimeDefault(?string $datetimeDefault)
+ * @method getUsergroupDefault(): string
+ * @method setUsergroupDefault(?string $usergroupDefaultArray)
+ * @method getUsergroupMultipleItems(): bool
+ * @method setUsergroupMultipleItems(?bool $usergroupMultipleItems)
+ * @method getUsergroupSelectUsers(): bool
+ * @method setUsergroupSelectUsers(?bool $usergroupSelectUsers)
+ * @method getUsergroupSelectGroups(): bool
+ * @method setUsergroupSelectGroups(?bool $usergroupSelectGroups)
+ * @method getShowUserStatus(): bool
+ * @method setShowUserStatus(?bool $showUserStatus)
  */
 class Column extends Entity implements JsonSerializable {
 	// Meta column types
@@ -73,6 +83,7 @@ class Column extends Entity implements JsonSerializable {
 	public const TYPE_TEXT = 'text';
 	public const TYPE_NUMBER = 'number';
 	public const TYPE_DATETIME = 'datetime';
+	public const TYPE_USERGROUP = 'usergroup';
 
 	protected ?string $title = null;
 	protected ?int $tableId = null;
@@ -108,6 +119,13 @@ class Column extends Entity implements JsonSerializable {
 	// type datetime
 	protected ?string $datetimeDefault = null;
 
+	// type usergroup
+	protected ?string $usergroupDefault = null;
+	protected ?bool $usergroupMultipleItems = null;
+	protected ?bool $usergroupSelectUsers = null;
+	protected ?bool $usergroupSelectGroups = null;
+	protected ?bool $showUserStatus = null;
+
 	public function __construct() {
 		$this->addType('id', 'integer');
 		$this->addType('tableId', 'integer');
@@ -121,6 +139,26 @@ public function __construct() {
 
 		// type text
 		$this->addType('textMaxLength', 'integer');
+
+		// // type usergroup
+		$this->addType('usergroupMultipleItems', 'boolean');
+		$this->addType('usergroupSelectUsers', 'boolean');
+		$this->addType('usergroupSelectGroups', 'boolean');
+		$this->addType('showUserStatus', 'boolean');
+	}
+
+	public function getUsergroupDefaultArray():array {
+		$default = $this->getUsergroupDefault();
+		if ($default !== "" && $default !== null) {
+			return \json_decode($default, true) ?? [];
+		} else {
+			return [];
+		}
+	}
+
+	public function setUsergroupDefaultArray(array $array):void {
+		$json = \json_encode($array);
+		$this->setUsergroup($json);
 	}
 
 	public function getSelectionOptionsArray():array {
@@ -175,6 +213,13 @@ public function jsonSerialize(): array {
 
 			// type datetime
 			'datetimeDefault' => $this->datetimeDefault,
+
+			// type usergroup
+			'usergroupDefault' => $this->getUsergroupDefaultArray(),
+			'usergroupMultipleItems' => $this->usergroupMultipleItems,
+			'usergroupSelectUsers' => $this->usergroupSelectUsers,
+			'usergroupSelectGroups' => $this->usergroupSelectGroups,
+			'showUserStatus' => $this->showUserStatus,
 		];
 	}
 }
diff --git a/lib/Db/ColumnTypes/UsergroupColumnQB.php b/lib/Db/ColumnTypes/UsergroupColumnQB.php
new file mode 100644
index 000000000..ccada8a50
--- /dev/null
+++ b/lib/Db/ColumnTypes/UsergroupColumnQB.php
@@ -0,0 +1,12 @@
+<?php
+
+namespace OCA\Tables\Db\ColumnTypes;
+
+use OCP\DB\QueryBuilder\IQueryBuilder;
+
+class UsergroupColumnQB extends SuperColumnQB implements IColumnTypeQB {
+	public function passSearchValue(IQueryBuilder $qb, string $unformattedSearchValue, string $operator, string $searchValuePlaceHolder): void {
+		// TODO how to handle searching for multiple users/groups?
+		$qb->setParameter($searchValuePlaceHolder, $unformattedSearchValue, IQueryBuilder::PARAM_STR);
+	}
+}
diff --git a/lib/Db/Row2Mapper.php b/lib/Db/Row2Mapper.php
index 06deb17cf..4e2b4f1cd 100644
--- a/lib/Db/Row2Mapper.php
+++ b/lib/Db/Row2Mapper.php
@@ -9,7 +9,7 @@
 use OCA\Tables\Helper\UserHelper;
 use OCP\AppFramework\Db\DoesNotExistException;
 use OCP\AppFramework\Db\MultipleObjectsReturnedException;
-use OCP\AppFramework\Db\QBMapper;
+use OCP\AppFramework\Db\TTransactional;
 use OCP\DB\Exception;
 use OCP\DB\IResult;
 use OCP\DB\QueryBuilder\IQueryBuilder;
@@ -21,6 +21,8 @@
 use Throwable;
 
 class Row2Mapper {
+	use TTransactional;
+
 	private RowSleeveMapper $rowSleeveMapper;
 	private ?string $userId = null;
 	private IDBConnection $db;
@@ -54,22 +56,14 @@ public function delete(Row2 $row): Row2 {
 		$this->db->beginTransaction();
 		try {
 			foreach ($this->columnsHelper->columns as $columnType) {
-				$cellMapperClassName = 'OCA\Tables\Db\RowCell' . ucfirst($columnType) . 'Mapper';
-				/** @var RowCellMapperSuper $cellMapper */
-				try {
-					$cellMapper = Server::get($cellMapperClassName);
-				} catch (NotFoundExceptionInterface|ContainerExceptionInterface $e) {
-					$this->logger->error($e->getMessage(), ['exception' => $e]);
-					throw new Exception(get_class($this) . ' - ' . __FUNCTION__ . ': ' . $e->getMessage());
-				}
-				$cellMapper->deleteAllForRow($row->getId());
+				$this->getCellMapperFromType($columnType)->deleteAllForRow($row->getId());
 			}
 			$this->rowSleeveMapper->deleteById($row->getId());
 			$this->db->commit();
 		} catch (Throwable $e) {
 			$this->db->rollBack();
 			$this->logger->error($e->getMessage(), ['exception' => $e]);
-			throw new Exception(get_class($this) . ' - ' . __FUNCTION__ . ': '.$e->getMessage());
+			throw new Exception(get_class($this) . ' - ' . __FUNCTION__ . ': ' . $e->getMessage());
 		}
 
 		return $row;
@@ -91,11 +85,11 @@ public function find(int $id, array $columns): Row2 {
 		} elseif (count($rows) === 0) {
 			$e = new Exception('Wanted row not found.');
 			$this->logger->error($e->getMessage(), ['exception' => $e]);
-			throw new NotFoundError(get_class($this) . ' - ' . __FUNCTION__ . ': '.$e->getMessage());
+			throw new NotFoundError(get_class($this) . ' - ' . __FUNCTION__ . ': ' . $e->getMessage());
 		} else {
 			$e = new Exception('Too many results for one wanted row.');
 			$this->logger->error($e->getMessage(), ['exception' => $e]);
-			throw new InternalError(get_class($this) . ' - ' . __FUNCTION__ . ': '.$e->getMessage());
+			throw new InternalError(get_class($this) . ' - ' . __FUNCTION__ . ': ' . $e->getMessage());
 		}
 	}
 
@@ -105,9 +99,9 @@ public function find(int $id, array $columns): Row2 {
 	public function findNextId(int $offsetId = -1): ?int {
 		try {
 			$rowSleeve = $this->rowSleeveMapper->findNext($offsetId);
-		} catch (MultipleObjectsReturnedException|Exception $e) {
+		} catch (MultipleObjectsReturnedException | Exception $e) {
 			$this->logger->error($e->getMessage(), ['exception' => $e]);
-			throw new InternalError(get_class($this) . ' - ' . __FUNCTION__ . ': '.$e->getMessage());
+			throw new InternalError(get_class($this) . ' - ' . __FUNCTION__ . ': ' . $e->getMessage());
 		} catch (DoesNotExistException $e) {
 			return null;
 		}
@@ -139,7 +133,7 @@ private function getWantedRowIds(string $userId, int $tableId, ?array $filter =
 		$qb->select('id')
 			->from('tables_row_sleeves', 'sleeves')
 			->where($qb->expr()->eq('table_id', $qb->createNamedParameter($tableId, IQueryBuilder::PARAM_INT)));
-		if($filter) {
+		if ($filter) {
 			$this->addFilterToQuery($qb, $filter, $userId);
 		}
 		if ($limit !== null) {
@@ -194,8 +188,19 @@ private function getRows(array $rowIds, array $columnIds): array {
 		foreach ($this->columnsHelper->columns as $columnType) {
 			$qbTmp = $this->db->getQueryBuilder();
 			$qbTmp->select('row_id', 'column_id', 'last_edit_at', 'last_edit_by')
-				->selectAlias($qb->expr()->castColumn('value', IQueryBuilder::PARAM_STR), 'value')
-				->from('tables_row_cells_'.$columnType)
+				->selectAlias($qb->expr()->castColumn('value', IQueryBuilder::PARAM_STR), 'value');
+
+			// This is not ideal but I cannot think of a good way to abstract this away into the mapper right now
+			// Ideally we dynamically construct this query depending on what additional selects the column type requires
+			// however the union requires us to match the exact number of selects for each column type
+			if ($columnType === Column::TYPE_USERGROUP) {
+				$qbTmp->selectAlias($qb->expr()->castColumn('value_type', IQueryBuilder::PARAM_STR), 'value_type');
+			} else {
+				$qbTmp->selectAlias($qbTmp->createFunction('NULL'), 'value_type');
+			}
+
+			$qbTmp
+				->from('tables_row_cells_' . $columnType)
 				->where($qb->expr()->in('column_id', $qb->createNamedParameter($columnIds, IQueryBuilder::PARAM_INT_ARRAY, ':columnIds')))
 				->andWhere($qb->expr()->in('row_id', $qb->createNamedParameter($rowIds, IQueryBuilder::PARAM_INT_ARRAY, ':rowsIds')));
 
@@ -208,6 +213,8 @@ private function getRows(array $rowIds, array $columnIds): array {
 		$qbSqlForColumnTypes .= ')';
 
 		$qb->select('row_id', 'column_id', 'created_by', 'created_at', 't1.last_edit_by', 't1.last_edit_at', 'value', 'table_id')
+			// Also should be more generic (see above)
+			->addSelect('value_type')
 			->from($qb->createFunction($qbSqlForColumnTypes), 't1')
 			->innerJoin('t1', 'tables_row_sleeves', 'rs', 'rs.id = t1.row_id');
 
@@ -222,10 +229,17 @@ private function getRows(array $rowIds, array $columnIds): array {
 			$sleeves = $this->rowSleeveMapper->findMultiple($rowIds);
 		} catch (Exception $e) {
 			$this->logger->error($e->getMessage(), ['exception' => $e]);
-			throw new InternalError(get_class($this) . ' - ' . __FUNCTION__ . ': '.$e->getMessage());
+			throw new InternalError(get_class($this) . ' - ' . __FUNCTION__ . ': ' . $e->getMessage());
+		}
+
+		try {
+			$columnTypes = $this->columnMapper->getColumnTypes($columnIds);
+		} catch (Exception $e) {
+			$this->logger->error($e->getMessage(), ['exception' => $e]);
+			throw new InternalError(get_class($this) . ' - ' . __FUNCTION__ . ': ' . $e->getMessage());
 		}
 
-		return $this->parseEntities($result, $sleeves);
+		return $this->parseEntities($result, $sleeves, $columnTypes);
 	}
 
 	/**
@@ -247,7 +261,7 @@ private function addFilterToQuery(IQueryBuilder &$qb, array $filters, string $us
 	private function replacePlaceholderValues(array &$filters, string $userId): void {
 		foreach ($filters as &$filterGroup) {
 			foreach ($filterGroup as &$filter) {
-				if(substr($filter['value'], 0, 1) === '@') {
+				if (substr($filter['value'], 0, 1) === '@') {
 					$filter['value'] = $this->resolveSearchValue($filter['value'], $userId);
 				}
 			}
@@ -297,7 +311,7 @@ private function getFilter(IQueryBuilder &$qb, array $filterGroup): array {
 			} else {
 				$e = new Exception("Needed column (" . $columnId . ") not found.");
 				$this->logger->error($e->getMessage(), ['exception' => $e]);
-				throw new InternalError(get_class($this) . ' - ' . __FUNCTION__ . ': '.$e->getMessage());
+				throw new InternalError(get_class($this) . ' - ' . __FUNCTION__ . ': ' . $e->getMessage());
 			}
 			$filterExpressions[] = $sql;
 		}
@@ -309,7 +323,7 @@ private function getFilter(IQueryBuilder &$qb, array $filterGroup): array {
 	 */
 	private function getFilterExpression(IQueryBuilder $qb, Column $column, string $operator, string $value): IQueryBuilder {
 		$paramType = $this->getColumnDbParamType($column);
-		$value = $this->formatValue($column, $value, 'in');
+		$value = $this->getCellMapper($column)->filterValueToQueryParam($column, $value);
 
 		// We try to match the requested value against the default before building the query
 		// so we know if we shall include rows that have no entry in the column_TYPE tables upfront
@@ -341,20 +355,20 @@ private function getFilterExpression(IQueryBuilder $qb, Column $column, string $
 				if ($column->getType() === 'selection' && $column->getSubtype() === 'multi') {
 					$value = str_replace(['"', '\''], '', $value);
 					$filterExpression = $qb2->expr()->orX(
-						$qb->expr()->like('value', $qb->createNamedParameter('['.$this->db->escapeLikeParameter($value).']')),
-						$qb->expr()->like('value', $qb->createNamedParameter('['.$this->db->escapeLikeParameter($value).',%')),
-						$qb->expr()->like('value', $qb->createNamedParameter('%,'.$this->db->escapeLikeParameter($value).']%')),
-						$qb->expr()->like('value', $qb->createNamedParameter('%,'.$this->db->escapeLikeParameter($value).',%'))
+						$qb->expr()->like('value', $qb->createNamedParameter('[' . $this->db->escapeLikeParameter($value) . ']')),
+						$qb->expr()->like('value', $qb->createNamedParameter('[' . $this->db->escapeLikeParameter($value) . ',%')),
+						$qb->expr()->like('value', $qb->createNamedParameter('%,' . $this->db->escapeLikeParameter($value) . ']%')),
+						$qb->expr()->like('value', $qb->createNamedParameter('%,' . $this->db->escapeLikeParameter($value) . ',%'))
 					);
 					break;
 				}
-				$filterExpression = $qb->expr()->like('value', $qb->createNamedParameter('%'.$this->db->escapeLikeParameter($value).'%', $paramType));
+				$filterExpression = $qb->expr()->like('value', $qb->createNamedParameter('%' . $this->db->escapeLikeParameter($value) . '%', $paramType));
 				break;
 			case 'is-equal':
 				$includeDefault = $defaultValue === $value;
 				if ($column->getType() === 'selection' && $column->getSubtype() === 'multi') {
 					$value = str_replace(['"', '\''], '', $value);
-					$filterExpression = $qb->expr()->eq('value', $qb->createNamedParameter('['.$this->db->escapeLikeParameter($value).']', $paramType));
+					$filterExpression = $qb->expr()->eq('value', $qb->createNamedParameter('[' . $this->db->escapeLikeParameter($value) . ']', $paramType));
 					break;
 				}
 				$filterExpression = $qb->expr()->eq('value', $qb->createNamedParameter($value, $paramType));
@@ -380,7 +394,7 @@ private function getFilterExpression(IQueryBuilder $qb, Column $column, string $
 				$filterExpression = $qb->expr()->isNull('value');
 				break;
 			default:
-				throw new InternalError('Operator '.$operator.' is not supported.');
+				throw new InternalError('Operator ' . $operator . ' is not supported.');
 		}
 
 		return $qb2->andWhere(
@@ -435,11 +449,11 @@ private function getMetaFilterExpression(IQueryBuilder $qb, int $columnId, strin
 	private function getSqlOperator(string $operator, IQueryBuilder $qb, string $columnName, $value, $paramType): string {
 		switch ($operator) {
 			case 'begins-with':
-				return $qb->expr()->like($columnName, $qb->createNamedParameter('%'.$this->db->escapeLikeParameter($value), $paramType));
+				return $qb->expr()->like($columnName, $qb->createNamedParameter('%' . $this->db->escapeLikeParameter($value), $paramType));
 			case 'ends-with':
-				return $qb->expr()->like($columnName, $qb->createNamedParameter($this->db->escapeLikeParameter($value).'%', $paramType));
+				return $qb->expr()->like($columnName, $qb->createNamedParameter($this->db->escapeLikeParameter($value) . '%', $paramType));
 			case 'contains':
-				return $qb->expr()->like($columnName, $qb->createNamedParameter('%'.$this->db->escapeLikeParameter($value).'%', $paramType));
+				return $qb->expr()->like($columnName, $qb->createNamedParameter('%' . $this->db->escapeLikeParameter($value) . '%', $paramType));
 			case 'is-equal':
 				return $qb->expr()->eq($columnName, $qb->createNamedParameter($value, $paramType));
 			case 'is-greater-than':
@@ -453,7 +467,7 @@ private function getSqlOperator(string $operator, IQueryBuilder $qb, string $col
 			case 'is-empty':
 				return $qb->expr()->isNull($columnName);
 			default:
-				throw new InternalError('Operator '.$operator.' is not supported.');
+				throw new InternalError('Operator ' . $operator . ' is not supported.');
 		}
 	}
 
@@ -492,7 +506,7 @@ private function resolveSearchValue(string $placeholder, string $userId): string
 	 * @return Row2[]
 	 * @throws InternalError
 	 */
-	private function parseEntities(IResult $result, array $sleeves): array {
+	private function parseEntities(IResult $result, array $sleeves, array $columnTypes): array {
 		$data = $result->fetchAll();
 
 		$rows = [];
@@ -506,13 +520,37 @@ private function parseEntities(IResult $result, array $sleeves): array {
 			$rows[$sleeve->getId()]->setTableId($sleeve->getTableId());
 		}
 
+		$rowValues = [];
+		$keyToColumnId = [];
+		$keyToRowId = [];
+
 		foreach ($data as $rowData) {
 			if (!isset($rowData['row_id']) || !isset($rows[$rowData['row_id']])) {
 				break;
 			}
 
-			/* @var array $rowData */
-			$rows[$rowData['row_id']]->addCell($rowData['column_id'], $this->formatValue($this->columns[$rowData['column_id']], $rowData['value']));
+			$columnType = $this->columns[$rowData['column_id']]->getType();
+			$cellClassName = 'OCA\Tables\Db\RowCell' . ucfirst($columnType);
+			$entity = call_user_func($cellClassName .'::fromRowData', $rowData); // >5.2.3
+			$cellMapper = $this->getCellMapperFromType($columnType);
+			$value = $cellMapper->formatEntity($this->columns[$rowData['column_id']], $entity);
+			$compositeKey = (string)$rowData['row_id'] . ',' . (string)$rowData['column_id'];
+
+			if ($cellMapper->hasMultipleValues()) {
+				if (array_key_exists($compositeKey, $rowValues)) {
+					$rowValues[$compositeKey][] = $value;
+				} else {
+					$rowValues[$compositeKey] = [$value];
+				}
+			} else {
+				$rowValues[$compositeKey] = $value;
+			}
+			$keyToColumnId[$compositeKey] = $rowData['column_id'];
+			$keyToRowId[$compositeKey] = $rowData['row_id'];
+		}
+
+		foreach ($rowValues as $compositeKey => $value) {
+			$rows[$keyToRowId[$compositeKey]]->addCell($keyToColumnId[$compositeKey], $value);
 		}
 
 		// format an array without keys
@@ -540,7 +578,7 @@ public function isRowInViewPresent(int $rowId, View $view, string $userId): bool
 	public function insert(Row2 $row, array $columns): Row2 {
 		$this->setColumns($columns);
 
-		if($row->getId()) {
+		if ($row->getId()) {
 			// if row has an id from migration or import etc.
 			$rowSleeve = $this->createRowSleeveFromExistingData($row->getId(), $row->getTableId(), $row->getCreatedAt(), $row->getCreatedBy(), $row->getLastEditBy(), $row->getLastEditAt());
 		} else {
@@ -564,7 +602,7 @@ public function insert(Row2 $row, array $columns): Row2 {
 	 * @throws InternalError
 	 */
 	public function update(Row2 $row, array $columns): Row2 {
-		if(!$columns) {
+		if (!$columns) {
 			throw new InternalError(get_class($this) . ' - ' . __FUNCTION__ . ': columns are missing');
 		}
 		$this->setColumns($columns);
@@ -579,9 +617,9 @@ public function update(Row2 $row, array $columns): Row2 {
 			$sleeve = $this->rowSleeveMapper->find($row->getId());
 			$this->updateMetaData($sleeve);
 			$this->rowSleeveMapper->update($sleeve);
-		} catch (DoesNotExistException|MultipleObjectsReturnedException|Exception $e) {
+		} catch (DoesNotExistException | MultipleObjectsReturnedException | Exception $e) {
 			$this->logger->error($e->getMessage(), ['exception' => $e]);
-			throw new InternalError(get_class($this) . ' - ' . __FUNCTION__ . ': '.$e->getMessage());
+			throw new InternalError(get_class($this) . ' - ' . __FUNCTION__ . ': ' . $e->getMessage());
 		}
 
 		// write all changed cells to its db-table
@@ -648,32 +686,37 @@ private function insertCell(int $rowId, int $columnId, $value, ?string $lastEdit
 			throw new InternalError(get_class($this) . ' - ' . __FUNCTION__ . ': '.$e->getMessage());
 		}
 
-		$cellClassName = 'OCA\Tables\Db\RowCell'.ucfirst($this->columns[$columnId]->getType());
-		/** @var RowCellSuper $cell */
-		$cell = new $cellClassName();
-
-		$cell->setRowIdWrapper($rowId);
-		$cell->setColumnIdWrapper($columnId);
-		$this->updateMetaData($cell, false, $lastEditAt, $lastEditBy);
 
 		// insert new cell
-		$cellMapperClassName = 'OCA\Tables\Db\RowCell'.ucfirst($this->columns[$columnId]->getType()).'Mapper';
-		/** @var QBMapper $cellMapper */
-		try {
-			$cellMapper = Server::get($cellMapperClassName);
-		} catch (NotFoundExceptionInterface|ContainerExceptionInterface $e) {
-			$this->logger->error($e->getMessage(), ['exception' => $e]);
-			throw new InternalError(get_class($this) . ' - ' . __FUNCTION__ . ': '.$e->getMessage());
-		}
+		$column = $this->columns[$columnId];
+		$cellMapper = $this->getCellMapper($column);
 
-		$v = $this->formatValue($this->columns[$columnId], $value, 'in');
-		$cell->setValueWrapper($v);
+		$column = $this->columns[$columnId];
 
 		try {
-			$cellMapper->insert($cell);
+			$cellClassName = 'OCA\Tables\Db\RowCell' . ucfirst($this->columns[$columnId]->getType());
+			if ($cellMapper->hasMultipleValues()) {
+				foreach ($value as $val) {
+					/** @var RowCellSuper $cell */
+					$cell = new $cellClassName();
+					$cell->setRowIdWrapper($rowId);
+					$cell->setColumnIdWrapper($columnId);
+					$this->updateMetaData($cell, false, $lastEditAt, $lastEditBy);
+					$cellMapper->applyDataToEntity($column, $cell, $val);
+					$cellMapper->insert($cell);
+				}
+			} else {
+				/** @var RowCellSuper $cell */
+				$cell = new $cellClassName();
+				$cell->setRowIdWrapper($rowId);
+				$cell->setColumnIdWrapper($columnId);
+				$this->updateMetaData($cell, false, $lastEditAt, $lastEditBy);
+				$cellMapper->applyDataToEntity($column, $cell, $value);
+				$cellMapper->insert($cell);
+			}
 		} catch (Exception $e) {
 			$this->logger->error($e->getMessage(), ['exception' => $e]);
-			throw new InternalError(get_class($this) . ' - ' . __FUNCTION__ . ': '.$e->getMessage());
+			throw new InternalError('Failed to insert column: ' . $e->getMessage(), 0, $e);
 		}
 	}
 
@@ -685,8 +728,7 @@ private function insertCell(int $rowId, int $columnId, $value, ?string $lastEdit
 	 * @throws InternalError
 	 */
 	private function updateCell(RowCellSuper $cell, RowCellMapperSuper $mapper, $value, Column $column): void {
-		$v = $this->formatValue($column, $value, 'in');
-		$cell->setValueWrapper($v);
+		$this->getCellMapper($column)->applyDataToEntity($column, $cell, $value);
 		$this->updateMetaData($cell);
 		$mapper->updateWrapper($cell);
 	}
@@ -695,18 +737,18 @@ private function updateCell(RowCellSuper $cell, RowCellMapperSuper $mapper, $val
 	 * @throws InternalError
 	 */
 	private function insertOrUpdateCell(int $rowId, int $columnId, $value): void {
-		$cellMapperClassName = 'OCA\Tables\Db\RowCell'.ucfirst($this->columns[$columnId]->getType()).'Mapper';
-		/** @var RowCellMapperSuper $cellMapper */
+		$cellMapper = $this->getCellMapper($this->columns[$columnId]);
 		try {
-			$cellMapper = Server::get($cellMapperClassName);
-		} catch (NotFoundExceptionInterface|ContainerExceptionInterface $e) {
-			$this->logger->error($e->getMessage(), ['exception' => $e]);
-			throw new InternalError(get_class($this) . ' - ' . __FUNCTION__ . ': '.$e->getMessage());
-		}
-		try {
-			$cell = $cellMapper->findByRowAndColumn($rowId, $columnId);
-			$this->updateCell($cell, $cellMapper, $value, $this->columns[$columnId]);
-		} catch (DoesNotExistException $e) {
+			if ($cellMapper->hasMultipleValues()) {
+				$this->atomic(function () use ($cellMapper, $rowId, $columnId, $value) {
+					$cellMapper->deleteAllForRow($rowId);
+					$this->insertCell($rowId, $columnId, $value);
+				}, $this->db);
+			} else {
+				$cell = $cellMapper->findByRowAndColumn($rowId, $columnId);
+				$this->updateCell($cell, $cellMapper, $value, $this->columns[$columnId]);
+			}
+		} catch (DoesNotExistException) {
 			$this->insertCell($rowId, $columnId, $value);
 		} catch (MultipleObjectsReturnedException|Exception $e) {
 			$this->logger->error($e->getMessage(), ['exception' => $e]);
@@ -729,61 +771,37 @@ private function setColumns(array $columns, array $tableColumns = []): void {
 
 	}
 
-	/**
-	 * @param Column $column
-	 * @param mixed $value
-	 * @param 'out'|'in' $mode Parse the value for incoming requests that get send to the db or outgoing, from the db to the services
-	 * @return mixed
-	 * @throws InternalError
-	 */
-	private function formatValue(Column $column, $value, string $mode = 'out') {
-		$cellMapperClassName = 'OCA\Tables\Db\RowCell'.ucfirst($column->getType()).'Mapper';
+	private function getCellMapper(Column $column): RowCellMapperSuper {
+		return $this->getCellMapperFromType($column->getType());
+	}
+
+	private function getCellMapperFromType(string $columnType): RowCellMapperSuper {
+		$cellMapperClassName = 'OCA\Tables\Db\RowCell'.ucfirst($columnType).'Mapper';
 		/** @var RowCellMapperSuper $cellMapper */
 		try {
-			$cellMapper = Server::get($cellMapperClassName);
+			return Server::get($cellMapperClassName);
 		} catch (NotFoundExceptionInterface|ContainerExceptionInterface $e) {
 			$this->logger->error($e->getMessage(), ['exception' => $e]);
 			throw new InternalError(get_class($this) . ' - ' . __FUNCTION__ . ': '.$e->getMessage());
 		}
-		if ($mode === 'out') {
-			return $cellMapper->parseValueOutgoing($column, $value);
-		} else {
-			return $cellMapper->parseValueIncoming($column, $value);
-		}
 	}
 
 	/**
 	 * @throws InternalError
 	 */
 	private function getColumnDbParamType(Column $column) {
-		$cellMapperClassName = 'OCA\Tables\Db\RowCell'.ucfirst($column->getType()).'Mapper';
-		/** @var RowCellMapperSuper $cellMapper */
-		try {
-			$cellMapper = Server::get($cellMapperClassName);
-		} catch (NotFoundExceptionInterface|ContainerExceptionInterface $e) {
-			$this->logger->error($e->getMessage(), ['exception' => $e]);
-			throw new InternalError(get_class($this) . ' - ' . __FUNCTION__ . ': '.$e->getMessage());
-		}
-		return $cellMapper->getDbParamType();
+		return $this->getCellMapper($column)->getDbParamType();
 	}
 
 	/**
 	 * @throws InternalError
 	 */
 	public function deleteDataForColumn(Column $column): void {
-		$cellMapperClassName = 'OCA\Tables\Db\RowCell' . ucfirst($column->getType()) . 'Mapper';
-		/** @var RowCellMapperSuper $cellMapper */
 		try {
-			$cellMapper = Server::get($cellMapperClassName);
-		} catch (NotFoundExceptionInterface|ContainerExceptionInterface $e) {
-			$this->logger->error($e->getMessage(), ['exception' => $e]);
-			throw new InternalError(get_class($this) . ' - ' . __FUNCTION__ . ': ' . $e->getMessage());
-		}
-		try {
-			$cellMapper->deleteAllForColumn($column->getId());
+			$this->getCellMapper($column)->deleteAllForColumn($column->getId());
 		} catch (Exception $e) {
 			$this->logger->error($e->getMessage(), ['exception' => $e]);
-			throw new InternalError(get_class($this) . ' - ' . __FUNCTION__ . ': '.$e->getMessage());
+			throw new InternalError(get_class($this) . ' - ' . __FUNCTION__ . ': ' . $e->getMessage());
 		}
 	}
 
@@ -834,19 +852,21 @@ private function getFormattedDefaultValue(Column $column) {
 		$defaultValue = null;
 		switch ($column->getType()) {
 			case Column::TYPE_SELECTION:
-				$defaultValue = $this->formatValue($column, $column->getSelectionDefault(), 'in');
+				$defaultValue = $this->getCellMapper($column)->filterValueToQueryParam($column, $column->getSelectionDefault());
 				break;
 			case Column::TYPE_DATETIME:
-				$defaultValue = $this->formatValue($column, $column->getDatetimeDefault(), 'in');
+				$defaultValue = $this->getCellMapper($column)->filterValueToQueryParam($column, $column->getDatetimeDefault());
 				break;
 			case Column::TYPE_NUMBER:
-				$defaultValue = $this->formatValue($column, $column->getNumberDefault(), 'in');
+				$defaultValue = $this->getCellMapper($column)->filterValueToQueryParam($column, $column->getNumberDefault());
 				break;
 			case Column::TYPE_TEXT:
-				$defaultValue = $this->formatValue($column, $column->getTextDefault(), 'in');
+				$defaultValue = $this->getCellMapper($column)->filterValueToQueryParam($column, $column->getTextDefault());
+				break;
+			case Column::TYPE_USERGROUP:
+				$defaultValue = $this->getCellMapper($column)->filterValueToQueryParam($column, $column->getUsergroupDefault());
 				break;
 		}
 		return $defaultValue;
 	}
-
 }
diff --git a/lib/Db/RowCellDatetime.php b/lib/Db/RowCellDatetime.php
index 5ee46201b..fa4c0deaf 100644
--- a/lib/Db/RowCellDatetime.php
+++ b/lib/Db/RowCellDatetime.php
@@ -5,8 +5,9 @@
 /** @template-extends RowCellSuper<RowCellDatetime> */
 class RowCellDatetime extends RowCellSuper {
 	protected ?string $value = null;
+	protected ?int $valueType = null;
 
 	public function jsonSerialize(): array {
-		return parent::jsonSerializePreparation($this->value);
+		return parent::jsonSerializePreparation($this->value, $this->valueType);
 	}
 }
diff --git a/lib/Db/RowCellMapperSuper.php b/lib/Db/RowCellMapperSuper.php
index 86f76509e..50bcbdab9 100644
--- a/lib/Db/RowCellMapperSuper.php
+++ b/lib/Db/RowCellMapperSuper.php
@@ -12,8 +12,8 @@
 /**
  * @template-extends QBMapper<T>
  * @template T of RowCellSuper
- * @template TIncoming
- * @template TOutgoing
+ * @template TIncoming Type the db is using to store the actual value
+ * @template TOutgoing Type the API is using
  */
 class RowCellMapperSuper extends QBMapper {
 
@@ -22,32 +22,39 @@ public function __construct(IDBConnection $db, string $table, string $class) {
 	}
 
 	/**
-	 * Parse value for db results (after send request)
-	 * eg for filtering
+	 * Format a row cell entity to API response array
 	 *
-	 * @param Column $column
-	 * @param TOutgoing $value
+	 * @param T $cell
 	 * @return TOutgoing
 	 */
-	public function parseValueOutgoing(Column $column, $value) {
+	public function formatEntity(Column $column, RowCellSuper $cell) {
+		/** @var TOutgoing $value */
+		$value = $cell->getValue();
 		return $value;
 	}
-
-	/**
-	 * Parse value for db requests (before send request)
-	 *
-	 * @param Column $column
-	 * @param TIncoming $value
-	 * @return TIncoming
+	/*
+	 * Transform value from a filter rule to the actual query parameter used
+	 * for constructing the view filter query
 	 */
-	public function parseValueIncoming(Column $column, $value) {
+	public function filterValueToQueryParam(Column $column, $value) {
 		return $value;
 	}
 
+	public function applyDataToEntity(Column $column, RowCellSuper $cell, $data): void {
+		$cell->setValue($data);
+	}
+
 	public function getDbParamType() {
 		return IQueryBuilder::PARAM_STR;
 	}
 
+	/*
+	 * Indicating that the column can have multiple values represented by individual entities
+	 */
+	public function hasMultipleValues(): bool {
+		return false;
+	}
+
 	/**
 	 * @throws Exception
 	 */
diff --git a/lib/Db/RowCellNumber.php b/lib/Db/RowCellNumber.php
index c1d33f7a6..45e0f1c96 100644
--- a/lib/Db/RowCellNumber.php
+++ b/lib/Db/RowCellNumber.php
@@ -5,8 +5,9 @@
 /** @template-extends RowCellSuper<RowCellNumber> */
 class RowCellNumber extends RowCellSuper {
 	protected ?float $value = null;
+	protected ?int $valueType = null;
 
 	public function jsonSerialize(): array {
-		return parent::jsonSerializePreparation($this->value);
+		return parent::jsonSerializePreparation($this->value, $this->valueType);
 	}
 }
diff --git a/lib/Db/RowCellNumberMapper.php b/lib/Db/RowCellNumberMapper.php
index 3a8867722..3b77f8d9f 100644
--- a/lib/Db/RowCellNumberMapper.php
+++ b/lib/Db/RowCellNumberMapper.php
@@ -13,10 +13,8 @@ public function __construct(IDBConnection $db) {
 		parent::__construct($db, $this->table, RowCellNumber::class);
 	}
 
-	/**
-	 * @inheritDoc
-	 */
-	public function parseValueOutgoing(Column $column, $value) {
+	public function formatEntity(Column $column, RowCellSuper $cell) {
+		$value = $cell->getValue();
 		if($value === '') {
 			return null;
 		}
@@ -28,14 +26,11 @@ public function parseValueOutgoing(Column $column, $value) {
 		}
 	}
 
-	/**
-	 * @inheritDoc
-	 */
-	public function parseValueIncoming(Column $column, $value): ?float {
-		if(!is_numeric($value)) {
-			return null;
+	public function applyDataToEntity(Column $column, RowCellSuper $cell, $data): void {
+		if(!is_numeric($data)) {
+			$cell->setValueWrapper(null);
 		}
-		return (float) $value;
+		$cell->setValueWrapper((float)$data);
 	}
 
 	public function getDbParamType() {
diff --git a/lib/Db/RowCellSelection.php b/lib/Db/RowCellSelection.php
index 42cc14202..9219944f3 100644
--- a/lib/Db/RowCellSelection.php
+++ b/lib/Db/RowCellSelection.php
@@ -5,8 +5,9 @@
 /** @template-extends RowCellSuper<RowCellSelection> */
 class RowCellSelection extends RowCellSuper {
 	protected ?string $value = null;
+	protected ?int $valueType = null;
 
 	public function jsonSerialize(): array {
-		return parent::jsonSerializePreparation($this->value);
+		return parent::jsonSerializePreparation($this->value, $this->valueType);
 	}
 }
diff --git a/lib/Db/RowCellSelectionMapper.php b/lib/Db/RowCellSelectionMapper.php
index 66d71dff0..36f280d95 100644
--- a/lib/Db/RowCellSelectionMapper.php
+++ b/lib/Db/RowCellSelectionMapper.php
@@ -14,10 +14,19 @@ public function __construct(IDBConnection $db) {
 		parent::__construct($db, $this->table, RowCellSelection::class);
 	}
 
-	/**
-	 * @inheritDoc
-	 */
-	public function parseValueIncoming(Column $column, $value): string {
+	public function filterValueToQueryParam(Column $column, $value) {
+		return $this->valueToJsonDbValue($column, $value);
+	}
+
+	public function applyDataToEntity(Column $column, RowCellSuper $cell, $data): void {
+		$cell->setValue($this->valueToJsonDbValue($column, $data));
+	}
+
+	public function formatEntity(Column $column, RowCellSuper $cell) {
+		return json_decode($cell->getValue());
+	}
+
+	private function valueToJsonDbValue(Column $column, $value): string {
 		if ($column->getSubtype() === 'check') {
 			return json_encode(ltrim($value, '"'));
 		}
@@ -28,11 +37,4 @@ public function parseValueIncoming(Column $column, $value): string {
 
 		return json_encode($value);
 	}
-
-	/**
-	 * @inheritDoc
-	 */
-	public function parseValueOutgoing(Column $column, $value) {
-		return json_decode($value);
-	}
 }
diff --git a/lib/Db/RowCellSuper.php b/lib/Db/RowCellSuper.php
index e2d5962ec..2c31be541 100644
--- a/lib/Db/RowCellSuper.php
+++ b/lib/Db/RowCellSuper.php
@@ -29,6 +29,8 @@ abstract class RowCellSuper extends Entity implements JsonSerializable {
 	protected ?int $rowId = null;
 	protected ?string $lastEditBy = null;
 	protected ?string $lastEditAt = null;
+	protected ?string $createdBy = null;
+	protected ?string $createdAt = null;
 
 	public function __construct() {
 		$this->addType('id', 'integer');
@@ -36,17 +38,39 @@ public function __construct() {
 		$this->addType('rowId', 'integer');
 	}
 
+	/**
+	 * Same as Entity::fromRow but ignoring unknown properties
+	 */
+	public static function fromRowData(array $row): RowCellSuper {
+		$instance = new static();
+
+		foreach ($row as $key => $value) {
+			$property = $instance->columnToProperty($key);
+			$setter = 'set' . ucfirst($property);
+			;
+			if (property_exists($instance, $property)) {
+				$instance->$setter($value);
+			}
+		}
+
+		$instance->resetUpdatedFields();
+
+		return $instance;
+	}
+
 	/**
 	 * @param float|null|string $value
+	 * @param int $value_type
 	 */
-	public function jsonSerializePreparation(string|float|null $value): array {
+	public function jsonSerializePreparation(string|float|null $value, int $valueType): array {
 		return [
 			'id' => $this->id,
 			'columnId' => $this->columnId,
 			'rowId' => $this->rowId,
 			'lastEditBy' => $this->lastEditBy,
 			'lastEditAt' => $this->lastEditAt,
-			'value' => $value
+			'value' => $value,
+			'valueType' => $valueType
 		];
 	}
 
diff --git a/lib/Db/RowCellText.php b/lib/Db/RowCellText.php
index 0650d7d8f..c64126f48 100644
--- a/lib/Db/RowCellText.php
+++ b/lib/Db/RowCellText.php
@@ -5,8 +5,9 @@
 /** @template-extends RowCellSuper<RowCellText> */
 class RowCellText extends RowCellSuper {
 	protected ?string $value = null;
+	protected ?int $valueType = null;
 
 	public function jsonSerialize(): array {
-		return parent::jsonSerializePreparation($this->value);
+		return parent::jsonSerializePreparation($this->value, $this->valueType);
 	}
 }
diff --git a/lib/Db/RowCellUsergroup.php b/lib/Db/RowCellUsergroup.php
new file mode 100644
index 000000000..65d3d2a0a
--- /dev/null
+++ b/lib/Db/RowCellUsergroup.php
@@ -0,0 +1,33 @@
+<?php
+
+namespace OCA\Tables\Db;
+
+/**
+ * @template-extends RowCellSuper<RowCellUsergroup>
+ * @method setValueType(int $param)
+ * @method getValueType(): int
+ */
+class RowCellUsergroup extends RowCellSuper {
+	protected ?string $value = null;
+	protected ?int $valueType = null;
+
+	public function jsonSerialize(): array {
+		return parent::jsonSerializePreparation($this->value, $this->valueType);
+	}
+
+	public function setValueWrapper($value) {
+		$this->setValue((string)$value['id']);
+		$this->setValueType((int)$value['type']);
+	}
+
+	public static function verifyUserGroupArray(array $data): bool {
+		if (!array_key_exists('id', $data)) {
+			return false;
+		}
+		if (!array_key_exists('type', $data)) {
+			return false;
+		}
+
+		return true;
+	}
+}
diff --git a/lib/Db/RowCellUsergroupMapper.php b/lib/Db/RowCellUsergroupMapper.php
new file mode 100644
index 000000000..5aa052cb6
--- /dev/null
+++ b/lib/Db/RowCellUsergroupMapper.php
@@ -0,0 +1,40 @@
+<?php
+
+namespace OCA\Tables\Db;
+
+use OCP\IDBConnection;
+use OCP\IUserManager;
+
+/** @template-extends RowCellMapperSuper<RowCellUsergroup, array, array> */
+class RowCellUsergroupMapper extends RowCellMapperSuper {
+	protected string $table = 'tables_row_cells_usergroup';
+
+	public function __construct(IDBConnection $db, private IUserManager $userManager) {
+		parent::__construct($db, $this->table, RowCellUsergroup::class);
+	}
+
+	public function filterValueToQueryParam(Column $column, $value) {
+		return $value;
+	}
+
+	public function applyDataToEntity(Column $column, RowCellSuper $cell, $data): void {
+		if (!RowCellUsergroup::verifyUserGroupArray($data)) {
+			throw new \InvalidArgumentException('Provided value is not valid user group data');
+		}
+
+		$cell->setValueWrapper($data);
+	}
+
+	public function formatEntity(Column $column, RowCellSuper $cell) {
+		$displayName = $cell->getValueType() === 0 ? ($this->userManager->getDisplayName($cell->getValue()) ?? $cell->getValue()) : $cell->getValue();
+		return [
+			'id' => $cell->getValue(),
+			'type' => $cell->getValueType(),
+			'displayName' => $displayName,
+		];
+	}
+
+	public function hasMultipleValues(): bool {
+		return true;
+	}
+}
diff --git a/lib/Helper/ColumnsHelper.php b/lib/Helper/ColumnsHelper.php
index 338ad07cd..8045422dc 100644
--- a/lib/Helper/ColumnsHelper.php
+++ b/lib/Helper/ColumnsHelper.php
@@ -8,6 +8,7 @@ class ColumnsHelper {
 		'text',
 		'number',
 		'datetime',
-		'selection'
+		'selection',
+		'usergroup'
 	];
 }
diff --git a/lib/Migration/Version000000Date20210921000000.php b/lib/Migration/Version000000Date20210921000000.php
index 0c5a71ca6..7867b6ef9 100644
--- a/lib/Migration/Version000000Date20210921000000.php
+++ b/lib/Migration/Version000000Date20210921000000.php
@@ -161,6 +161,28 @@ public function changeSchema(IOutput $output, Closure $schemaClosure, array $opt
 				'notnull' => false,
 			]);
 
+			// type usergroup (added in Version000800Date20240712000000)
+			$table->addColumn('usergroup_default', Types::TEXT, [
+				'notnull' => false,
+				'length' => 65535,
+			]);
+			$table->addColumn('usergroup_multiple_items', Types::BOOLEAN, [
+				'notnull' => false,
+				'default' => 0,
+			]);
+			$table->addColumn('usergroup_select_users', Types::BOOLEAN, [
+				'notnull' => false,
+				'default' => 0,
+			]);
+			$table->addColumn('usergroup_select_groups', Types::BOOLEAN, [
+				'notnull' => false,
+				'default' => 0,
+			]);
+			$table->addColumn('show_user_status', Types::BOOLEAN, [
+				'notnull' => false,
+				'default' => 0,
+			]);
+
 			$table->setPrimaryKey(['id']);
 
 			$table->addIndex(['table_id'], 'tables_columns_t_id');
diff --git a/lib/Migration/Version000800Date20240712000000.php b/lib/Migration/Version000800Date20240712000000.php
new file mode 100644
index 000000000..726d7929e
--- /dev/null
+++ b/lib/Migration/Version000800Date20240712000000.php
@@ -0,0 +1,91 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * SPDX-FileCopyrightText: 2024 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+namespace OCA\Tables\Migration;
+
+use Closure;
+use OCP\DB\ISchemaWrapper;
+use OCP\DB\Types;
+use OCP\Migration\IOutput;
+use OCP\Migration\SimpleMigrationStep;
+
+class Version000800Date20240712000000 extends SimpleMigrationStep {
+	public function changeSchema(IOutput $output, Closure $schemaClosure, array $options): ?ISchemaWrapper {
+		/** @var ISchemaWrapper $schema */
+		$schema = $schemaClosure();
+
+		$changes = $this->createUserGroupTable($schema, 'usergroup', Types::TEXT);
+		$changes = $this->haveUserGroupColumnDefinitionFields($schema) ?? $changes;
+
+		return $changes;
+	}
+
+	private function createUserGroupTable(ISchemaWrapper $schema, string $name, string $type): ?ISchemaWrapper {
+		if (!$schema->hasTable('tables_row_cells_'.$name)) {
+			$table = $schema->createTable('tables_row_cells_'.$name);
+			$table->addColumn('id', Types::INTEGER, [
+				'autoincrement' => true,
+				'notnull' => true,
+			]);
+			$table->addColumn('column_id', Types::INTEGER, ['notnull' => true]);
+			$table->addColumn('row_id', Types::INTEGER, ['notnull' => true]);
+			$table->addColumn('value', $type, ['notnull' => false]);
+			$table->addColumn('value_type', Types::INTEGER, ['notnull' => false]);
+			$table->addColumn('last_edit_at', Types::DATETIME, ['notnull' => true]);
+			$table->addColumn('last_edit_by', Types::STRING, ['notnull' => true, 'length' => 64]);
+			$table->addIndex(['column_id', 'row_id']);
+			$table->setPrimaryKey(['id']);
+			return $schema;
+		}
+
+		return null;
+	}
+
+	/**
+	 * Add column schema options for usergroup type to the tables_columns table
+	 */
+	private function haveUserGroupColumnDefinitionFields(ISchemaWrapper $schema) {
+		if ($schema->hasTable('tables_columns')) {
+			$table = $schema->getTable('tables_columns');
+			if (!$table->hasColumn('usergroup_default')) {
+				$table->addColumn('usergroup_default', Types::TEXT, [
+					'notnull' => false,
+					'length' => 65535,
+				]);
+			}
+			if (!$table->hasColumn('usergroup_multiple_items')) {
+				$table->addColumn('usergroup_multiple_items', Types::BOOLEAN, [
+					'notnull' => false,
+					'default' => 0,
+				]);
+			}
+			if (!$table->hasColumn('usergroup_select_users')) {
+				$table->addColumn('usergroup_select_users', Types::BOOLEAN, [
+					'notnull' => false,
+					'default' => 0,
+				]);
+			}
+			if (!$table->hasColumn('usergroup_select_groups')) {
+				$table->addColumn('usergroup_select_groups', Types::BOOLEAN, [
+					'notnull' => false,
+					'default' => 0,
+				]);
+			}
+			if (!$table->hasColumn('show_user_status')) {
+				$table->addColumn('show_user_status', Types::BOOLEAN, [
+					'notnull' => false,
+					'default' => 0,
+				]);
+			}
+			return $schema;
+		}
+
+		return null;
+	}
+}
diff --git a/lib/ResponseDefinitions.php b/lib/ResponseDefinitions.php
index c53be07a1..de9c6adb4 100644
--- a/lib/ResponseDefinitions.php
+++ b/lib/ResponseDefinitions.php
@@ -108,16 +108,21 @@
  *  orderWeight: int,
  *  numberDefault: float,
  *  numberMin: float,
- *  	numberMax: float,
- *  	numberDecimals: int,
- *  	numberPrefix: string,
- *  	numberSuffix: string,
- *  	textDefault: string,
- *  	textAllowedPattern: string,
- *  	textMaxLength: int,
- *  	selectionOptions: string,
- *  	selectionDefault: string,
- *  	datetimeDefault: string,
+ *  numberMax: float,
+ *  numberDecimals: int,
+ *  numberPrefix: string,
+ *  numberSuffix: string,
+ *  textDefault: string,
+ *  textAllowedPattern: string,
+ *  textMaxLength: int,
+ *  selectionOptions: string,
+ *  selectionDefault: string,
+ *  datetimeDefault: string,
+ *  usergroupDefault: string,
+ *  usergroupMultipleItems: bool,
+ *  usergroupSelectUsers: bool,
+ *  usergroupSelectGroups: bool,
+ *  showUserStatus: bool,
  * }
  *
  * @psalm-type TablesImportState = array{
@@ -144,6 +149,8 @@
  *     displayMode: int,
  *     userId: string,
  * }
+ *
+ * @psalm-type TablesColumn
  */
 class ResponseDefinitions {
 }
diff --git a/lib/Service/ColumnService.php b/lib/Service/ColumnService.php
index afa2e0a7d..338dbbbb9 100644
--- a/lib/Service/ColumnService.php
+++ b/lib/Service/ColumnService.php
@@ -154,6 +154,11 @@ public function find(int $id, ?string $userId = null): Column {
 	 * @param string|null $selectionOptions
 	 * @param string|null $selectionDefault
 	 * @param string|null $datetimeDefault
+	 * @param string|null $usergroupDefault
+	 * @param bool|null $usergroupMultipleItems
+	 * @param bool|null $usergroupSelectUsers
+	 * @param bool|null $usergroupSelectGroups
+	 * @param bool|null $showUserStatus
 	 * @param array $selectedViewIds
 	 * @return Column
 	 *
@@ -185,6 +190,13 @@ public function create(
 		?string $selectionDefault,
 
 		?string $datetimeDefault,
+
+		?string $usergroupDefault,
+		?bool $usergroupMultipleItems,
+		?bool $usergroupSelectUsers,
+		?bool $usergroupSelectGroups,
+		?bool $showUserStatus,
+		
 		array $selectedViewIds = []
 	):Column {
 		// security
@@ -267,6 +279,11 @@ public function create(
 		$item->setSelectionOptions($selectionOptions);
 		$item->setSelectionDefault($selectionDefault);
 		$item->setDatetimeDefault($datetimeDefault);
+		$item->setUsergroupDefault($usergroupDefault);
+		$item->setUsergroupMultipleItems($usergroupMultipleItems);
+		$item->setUsergroupSelectUsers($usergroupSelectUsers);
+		$item->setUsergroupSelectGroups($usergroupSelectGroups);
+		$item->setShowUserStatus($showUserStatus);
 
 		try {
 			$entity = $this->mapper->insert($item);
@@ -317,6 +334,11 @@ public function create(
 	 * @param string|null $selectionOptions
 	 * @param string|null $selectionDefault
 	 * @param string|null $datetimeDefault
+	 * @param string|null $usergroupDefault
+	 * @param bool|null $usergroupMultipleItems
+	 * @param bool|null $usergroupSelectUsers
+	 * @param bool|null $usergroupSelectGroups
+	 * @param bool|null $showUserStatus
 	 * @return Column
 	 * @throws InternalError
 	 */
@@ -343,7 +365,14 @@ public function update(
 
 		?string $selectionOptions,
 		?string $selectionDefault,
-		?string $datetimeDefault
+
+		?string $datetimeDefault,
+
+		?string $usergroupDefault,
+		?bool $usergroupMultipleItems,
+		?bool $usergroupSelectUsers,
+		?bool $usergroupSelectGroups,
+		?bool $showUserStatus,
 	):Column {
 		try {
 			/** @var Column $item */
@@ -391,6 +420,14 @@ public function update(
 			}
 			$item->setDatetimeDefault($datetimeDefault);
 
+			if ($usergroupDefault !== null) {
+				$item->setUsergroupDefault($usergroupDefault);
+			}
+			$item->setUsergroupMultipleItems($usergroupMultipleItems);
+			$item->setUsergroupSelectUsers($usergroupSelectUsers);
+			$item->setUsergroupSelectGroups($usergroupSelectGroups);
+			$item->setShowUserStatus($showUserStatus);
+
 			$this->updateMetadata($item, $userId);
 			return $this->enhanceColumn($this->mapper->update($item));
 		} catch (Exception $e) {
@@ -549,6 +586,11 @@ public function findOrCreateColumnsByTitleForTableAsArray(?int $tableId, ?int $v
 					null,
 					$dataTypes[$i]['selection_default'] ?? null,
 					null,
+					null,
+					null,
+					null,
+					null,
+					null,
 					[]
 				);
 				$countCreatedColumns++;
diff --git a/lib/Service/ColumnTypes/IColumnTypeBusiness.php b/lib/Service/ColumnTypes/IColumnTypeBusiness.php
index d461b2ac9..3c93d82ad 100644
--- a/lib/Service/ColumnTypes/IColumnTypeBusiness.php
+++ b/lib/Service/ColumnTypes/IColumnTypeBusiness.php
@@ -7,7 +7,11 @@
 interface IColumnTypeBusiness {
 
 	/**
-	 * try to parse a string for the given column type
+	 * Parse frontend value and transform for using it in the database
+	 *
+	 * Used when inserting from API to the database
+	 *
+	 * FIXME: Why is this not using Mapper methods which should do the same thing
 	 *
 	 * @param mixed $value
 	 * @param Column|null $column
diff --git a/lib/Service/ColumnTypes/UsergroupBusiness.php b/lib/Service/ColumnTypes/UsergroupBusiness.php
new file mode 100644
index 000000000..e04debd51
--- /dev/null
+++ b/lib/Service/ColumnTypes/UsergroupBusiness.php
@@ -0,0 +1,61 @@
+<?php
+
+namespace OCA\Tables\Service\ColumnTypes;
+
+use OCA\Tables\Db\Column;
+
+class UsergroupBusiness extends SuperBusiness implements IColumnTypeBusiness {
+
+	/**
+	 * Parse frontend value (array) and transform for using it in the database (array)
+	 * Uses json encode just because wrapping methods currently all assume that
+	 *
+	 * Used when inserting from API to the database
+	 *
+	 * Why not use Mapper::parseValueIncoming
+	 *
+	 * @param mixed $value (array|string|null)
+	 * @param Column|null $column
+	 * @return string
+	 */
+	public function parseValue($value, ?Column $column = null): string {
+		if(!$column) {
+			$this->logger->warning('No column given, but expected on '.__FUNCTION__.' within '.__CLASS__, ['exception' => new \Exception()]);
+			return json_encode([]);
+		}
+
+		if($value === null) {
+			return json_encode([]);
+		}
+
+		return json_encode($value);
+	}
+
+	/**
+	 * @param mixed $value parsable is json encoded array{id: string, type: int}
+	 * @param Column|null $column
+	 * @return bool
+	 */
+	public function canBeParsed($value, ?Column $column = null): bool {
+		if(!$column) {
+			$this->logger->warning('No column given, but expected on '.__FUNCTION__.' within '.__CLASS__, ['exception' => new \Exception()]);
+			return false;
+		}
+
+		if($value === null) {
+			return true;
+		}
+
+		if (is_string($value)) {
+			$value = json_decode($value, true);
+		}
+
+		foreach ($value as $v) {
+			if((array_key_exists('id', $v) && !is_string($v['id'])) && (array_key_exists('type', $v) && !is_int($v['type']))) {
+				return false;
+			}
+		}
+
+		return true;
+	}
+}
diff --git a/lib/Service/ImportService.php b/lib/Service/ImportService.php
index 81e375705..a019b7ea6 100644
--- a/lib/Service/ImportService.php
+++ b/lib/Service/ImportService.php
@@ -432,6 +432,11 @@ private function getColumns(Row $firstRow, Row $secondRow): void {
 						$this->columnsConfig[$index]['selectionOptions'] ?? '',
 						$this->columnsConfig[$index]['selectionDefault'] ?? '',
 						$this->columnsConfig[$index]['datetimeDefault'] ?? '',
+						$this->columnsConfig[$index]['usergroupDefault'] ?? null,
+						$this->columnsConfig[$index]['usergroupMultipleItems'] ?? null,
+						$this->columnsConfig[$index]['usergroupSelectUsers'] ?? null,
+						$this->columnsConfig[$index]['usergroupSelectGroups'] ?? null,
+						$this->columnsConfig[$index]['showUserStatus'] ?? null,
 						$this->columnsConfig[$index]['selectedViewIds'] ?? []
 					);
 					$title = $column->getTitle();
diff --git a/lib/Service/RowService.php b/lib/Service/RowService.php
index a835b3764..e4a95cbb0 100644
--- a/lib/Service/RowService.php
+++ b/lib/Service/RowService.php
@@ -275,7 +275,7 @@ private function parseValueByColumnType(Column $column, $value = null) {
 			/** @var IColumnTypeBusiness $columnBusiness */
 			$columnBusiness = Server::get($businessClassName);
 			if($columnBusiness->canBeParsed($value, $column)) {
-				return json_decode($columnBusiness->parseValue($value, $column));
+				return json_decode($columnBusiness->parseValue($value, $column), true);
 			}
 		} catch (NotFoundExceptionInterface|ContainerExceptionInterface $e) {
 			$this->logger->debug('Column type business class not found', ['exception' => $e]);
diff --git a/lib/Service/TableTemplateService.php b/lib/Service/TableTemplateService.php
index 9f3d2213b..44becab60 100644
--- a/lib/Service/TableTemplateService.php
+++ b/lib/Service/TableTemplateService.php
@@ -853,6 +853,21 @@ private function createColumn(int $tableId, array $parameters): ?Column {
 			// datetimeDefault
 			(isset($parameters['datetimeDefault'])) ? $parameters['datetimeDefault'] : '',
 
+			// usergroupDefault
+			(isset($parameters['usergroupDefault'])) ? $parameters['usergroupDefault'] : '',
+
+			// usergroupMultipleItems
+			(isset($parameters['usergroupMultipleItems'])) ? $parameters['usergroupMultipleItems'] : null,
+
+			// usergroupSelectUsers
+			(isset($parameters['usergroupSelectUsers'])) ? $parameters['usergroupSelectUsers'] : null,
+
+			// usergroupSelectGroups
+			(isset($parameters['usergroupSelectGroups'])) ? $parameters['usergroupSelectGroups'] : null,
+
+			// showUserStatus
+			(isset($parameters['showUserStatus'])) ? $parameters['showUserStatus'] : null,
+
 			// additional view ids
 			[]
 		);
diff --git a/openapi.json b/openapi.json
index 652d6d5cd..9e06758db 100644
--- a/openapi.json
+++ b/openapi.json
@@ -90,7 +90,12 @@
                     "textMaxLength",
                     "selectionOptions",
                     "selectionDefault",
-                    "datetimeDefault"
+                    "datetimeDefault",
+                    "usergroupDefault",
+                    "usergroupMultipleItems",
+                    "usergroupSelectUsers",
+                    "usergroupSelectGroups",
+                    "showUserStatus"
                 ],
                 "properties": {
                     "id": {
@@ -172,6 +177,21 @@
                     },
                     "datetimeDefault": {
                         "type": "string"
+                    },
+                    "usergroupDefault": {
+                        "type": "string"
+                    },
+                    "usergroupMultipleItems": {
+                        "type": "boolean"
+                    },
+                    "usergroupSelectUsers": {
+                        "type": "boolean"
+                    },
+                    "usergroupSelectGroups": {
+                        "type": "boolean"
+                    },
+                    "showUserStatus": {
+                        "type": "boolean"
                     }
                 }
             },
@@ -2858,7 +2878,8 @@
                                             "text",
                                             "number",
                                             "datetime",
-                                            "select"
+                                            "select",
+                                            "usergroup"
                                         ],
                                         "description": "Column main type"
                                     },
@@ -2944,6 +2965,32 @@
                                         "default": "",
                                         "description": "Default value, if column is datetime"
                                     },
+                                    "usergroupDefault": {
+                                        "type": "string",
+                                        "nullable": true,
+                                        "default": "",
+                                        "description": "Default value, if column is usergroup"
+                                    },
+                                    "usergroupMultipleItems": {
+                                        "type": "boolean",
+                                        "nullable": true,
+                                        "description": "Can select multiple users or/and groups, if column is usergroup"
+                                    },
+                                    "usergroupSelectUsers": {
+                                        "type": "boolean",
+                                        "nullable": true,
+                                        "description": "Can select users, if column type is usergroup"
+                                    },
+                                    "usergroupSelectGroups": {
+                                        "type": "boolean",
+                                        "nullable": true,
+                                        "description": "Can select groups, if column type is usergroup"
+                                    },
+                                    "usergroupShowUserStatus": {
+                                        "type": "boolean",
+                                        "nullable": true,
+                                        "description": "Whether to show the user's status, if column type is usergroup"
+                                    },
                                     "selectedViewIds": {
                                         "type": "array",
                                         "nullable": true,
@@ -3180,7 +3227,8 @@
                                             "text",
                                             "number",
                                             "datetime",
-                                            "select"
+                                            "select",
+                                            "usergroup"
                                         ],
                                         "description": "Column main type"
                                     },
@@ -3266,6 +3314,32 @@
                                         "default": "",
                                         "description": "Default value, if column is datetime"
                                     },
+                                    "usergroupDefault": {
+                                        "type": "string",
+                                        "nullable": true,
+                                        "default": "",
+                                        "description": "Default value, if column is usergroup (json array{id: string, type: int})"
+                                    },
+                                    "usergroupMultipleItems": {
+                                        "type": "boolean",
+                                        "nullable": true,
+                                        "description": "Can select multiple users or/and groups, if column is usergroup"
+                                    },
+                                    "usergroupSelectUsers": {
+                                        "type": "boolean",
+                                        "nullable": true,
+                                        "description": "Can select users, if column type is usergroup"
+                                    },
+                                    "usergroupSelectGroups": {
+                                        "type": "boolean",
+                                        "nullable": true,
+                                        "description": "Can select groups, if column type is usergroup"
+                                    },
+                                    "usergroupShowUserStatus": {
+                                        "type": "boolean",
+                                        "nullable": true,
+                                        "description": "Whether to show the user's status, if column type is usergroup"
+                                    },
                                     "selectedViewIds": {
                                         "type": "array",
                                         "nullable": true,
@@ -3454,6 +3528,31 @@
                                         "type": "string",
                                         "nullable": true,
                                         "description": "Default value, if column is datetime"
+                                    },
+                                    "usergroupDefault": {
+                                        "type": "string",
+                                        "nullable": true,
+                                        "description": "Default value, if column is usergroup"
+                                    },
+                                    "usergroupMultipleItems": {
+                                        "type": "boolean",
+                                        "nullable": true,
+                                        "description": "Can select multiple users or/and groups, if column is usergroup"
+                                    },
+                                    "usergroupSelectUsers": {
+                                        "type": "boolean",
+                                        "nullable": true,
+                                        "description": "Can select users, if column type is usergroup"
+                                    },
+                                    "usergroupSelectGroups": {
+                                        "type": "boolean",
+                                        "nullable": true,
+                                        "description": "Can select groups, if column type is usergroup"
+                                    },
+                                    "usergroupShowUserStatus": {
+                                        "type": "boolean",
+                                        "nullable": true,
+                                        "description": "Whether to show the user's status, if column type is usergroup"
                                     }
                                 }
                             }
@@ -7764,6 +7863,261 @@
                 }
             }
         },
+        "/ocs/v2.php/apps/tables/api/2/columns/usergroup": {
+            "post": {
+                "operationId": "api_columns-create-usergroup-column",
+                "summary": "[api v2] Create new usergroup column",
+                "tags": [
+                    "api_columns"
+                ],
+                "security": [
+                    {
+                        "bearer_auth": []
+                    },
+                    {
+                        "basic_auth": []
+                    }
+                ],
+                "requestBody": {
+                    "required": true,
+                    "content": {
+                        "application/json": {
+                            "schema": {
+                                "type": "object",
+                                "required": [
+                                    "baseNodeId",
+                                    "title"
+                                ],
+                                "properties": {
+                                    "baseNodeId": {
+                                        "type": "integer",
+                                        "format": "int64",
+                                        "description": "Context of the column creation"
+                                    },
+                                    "title": {
+                                        "type": "string",
+                                        "description": "Title"
+                                    },
+                                    "usergroupDefault": {
+                                        "type": "string",
+                                        "nullable": true,
+                                        "description": "Json array{id: string, type: int}, eg [{\"id\": \"admin\", \"type\": 0}, {\"id\": \"user1\", \"type\": 0}]"
+                                    },
+                                    "usergroupMultipleItems": {
+                                        "type": "boolean",
+                                        "description": "Whether you can select multiple users or/and groups"
+                                    },
+                                    "usergroupSelectUsers": {
+                                        "type": "boolean",
+                                        "description": "Whether you can select users"
+                                    },
+                                    "usergroupSelectGroups": {
+                                        "type": "boolean",
+                                        "description": "Whether you can select groups"
+                                    },
+                                    "showUserStatus": {
+                                        "type": "boolean",
+                                        "description": "Whether to show the user's status"
+                                    },
+                                    "description": {
+                                        "type": "string",
+                                        "nullable": true,
+                                        "description": "Description"
+                                    },
+                                    "selectedViewIds": {
+                                        "type": "array",
+                                        "nullable": true,
+                                        "default": [],
+                                        "description": "View IDs where this columns should be added",
+                                        "items": {
+                                            "type": "integer",
+                                            "format": "int64"
+                                        }
+                                    },
+                                    "mandatory": {
+                                        "type": "boolean",
+                                        "default": false,
+                                        "description": "Is mandatory"
+                                    },
+                                    "baseNodeType": {
+                                        "type": "string",
+                                        "default": "table",
+                                        "enum": [
+                                            "table",
+                                            "view"
+                                        ],
+                                        "description": "Context type of the column creation"
+                                    }
+                                }
+                            }
+                        }
+                    }
+                },
+                "parameters": [
+                    {
+                        "name": "OCS-APIRequest",
+                        "in": "header",
+                        "description": "Required to be true for the API request to pass",
+                        "required": true,
+                        "schema": {
+                            "type": "boolean",
+                            "default": true
+                        }
+                    }
+                ],
+                "responses": {
+                    "200": {
+                        "description": "Column created",
+                        "content": {
+                            "application/json": {
+                                "schema": {
+                                    "type": "object",
+                                    "required": [
+                                        "ocs"
+                                    ],
+                                    "properties": {
+                                        "ocs": {
+                                            "type": "object",
+                                            "required": [
+                                                "meta",
+                                                "data"
+                                            ],
+                                            "properties": {
+                                                "meta": {
+                                                    "$ref": "#/components/schemas/OCSMeta"
+                                                },
+                                                "data": {
+                                                    "$ref": "#/components/schemas/Column"
+                                                }
+                                            }
+                                        }
+                                    }
+                                }
+                            }
+                        }
+                    },
+                    "403": {
+                        "description": "No permission",
+                        "content": {
+                            "application/json": {
+                                "schema": {
+                                    "type": "object",
+                                    "required": [
+                                        "ocs"
+                                    ],
+                                    "properties": {
+                                        "ocs": {
+                                            "type": "object",
+                                            "required": [
+                                                "meta",
+                                                "data"
+                                            ],
+                                            "properties": {
+                                                "meta": {
+                                                    "$ref": "#/components/schemas/OCSMeta"
+                                                },
+                                                "data": {
+                                                    "type": "object",
+                                                    "required": [
+                                                        "message"
+                                                    ],
+                                                    "properties": {
+                                                        "message": {
+                                                            "type": "string"
+                                                        }
+                                                    }
+                                                }
+                                            }
+                                        }
+                                    }
+                                }
+                            }
+                        }
+                    },
+                    "500": {
+                        "description": "",
+                        "content": {
+                            "application/json": {
+                                "schema": {
+                                    "type": "object",
+                                    "required": [
+                                        "ocs"
+                                    ],
+                                    "properties": {
+                                        "ocs": {
+                                            "type": "object",
+                                            "required": [
+                                                "meta",
+                                                "data"
+                                            ],
+                                            "properties": {
+                                                "meta": {
+                                                    "$ref": "#/components/schemas/OCSMeta"
+                                                },
+                                                "data": {
+                                                    "type": "object",
+                                                    "required": [
+                                                        "message"
+                                                    ],
+                                                    "properties": {
+                                                        "message": {
+                                                            "type": "string"
+                                                        }
+                                                    }
+                                                }
+                                            }
+                                        }
+                                    }
+                                }
+                            },
+                            "text/plain": {
+                                "schema": {
+                                    "type": "string"
+                                }
+                            }
+                        }
+                    },
+                    "404": {
+                        "description": "Not found",
+                        "content": {
+                            "application/json": {
+                                "schema": {
+                                    "type": "object",
+                                    "required": [
+                                        "ocs"
+                                    ],
+                                    "properties": {
+                                        "ocs": {
+                                            "type": "object",
+                                            "required": [
+                                                "meta",
+                                                "data"
+                                            ],
+                                            "properties": {
+                                                "meta": {
+                                                    "$ref": "#/components/schemas/OCSMeta"
+                                                },
+                                                "data": {
+                                                    "type": "object",
+                                                    "required": [
+                                                        "message"
+                                                    ],
+                                                    "properties": {
+                                                        "message": {
+                                                            "type": "string"
+                                                        }
+                                                    }
+                                                }
+                                            }
+                                        }
+                                    }
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+        },
         "/ocs/v2.php/apps/tables/api/2/favorites/{nodeType}/{nodeId}": {
             "post": {
                 "operationId": "api_favorite-create",
diff --git a/src/types/openapi/openapi.ts b/src/types/openapi/openapi.ts
index b64696958..b38fd9ea3 100644
--- a/src/types/openapi/openapi.ts
+++ b/src/types/openapi/openapi.ts
@@ -605,6 +605,23 @@ export type paths = {
         readonly patch?: never;
         readonly trace?: never;
     };
+    readonly "/ocs/v2.php/apps/tables/api/2/columns/usergroup": {
+        readonly parameters: {
+            readonly query?: never;
+            readonly header?: never;
+            readonly path?: never;
+            readonly cookie?: never;
+        };
+        readonly get?: never;
+        readonly put?: never;
+        /** [api v2] Create new usergroup column */
+        readonly post: operations["api_columns-create-usergroup-column"];
+        readonly delete?: never;
+        readonly options?: never;
+        readonly head?: never;
+        readonly patch?: never;
+        readonly trace?: never;
+    };
     readonly "/ocs/v2.php/apps/tables/api/2/favorites/{nodeType}/{nodeId}": {
         readonly parameters: {
             readonly query?: never;
@@ -760,6 +777,11 @@ export type components = {
             readonly selectionOptions: string;
             readonly selectionDefault: string;
             readonly datetimeDefault: string;
+            readonly usergroupDefault: string;
+            readonly usergroupMultipleItems: boolean;
+            readonly usergroupSelectUsers: boolean;
+            readonly usergroupSelectGroups: boolean;
+            readonly showUserStatus: boolean;
         };
         readonly Context: {
             /** Format: int64 */
@@ -2120,7 +2142,7 @@ export interface operations {
                      * @description Column main type
                      * @enum {string}
                      */
-                    readonly type: "text" | "number" | "datetime" | "select";
+                    readonly type: "text" | "number" | "datetime" | "select" | "usergroup";
                     /** @description Column sub type */
                     readonly subtype?: string | null;
                     /** @description Is the column mandatory */
@@ -2175,6 +2197,19 @@ export interface operations {
                      * @default
                      */
                     readonly datetimeDefault?: string | null;
+                    /**
+                     * @description Default value, if column is usergroup
+                     * @default
+                     */
+                    readonly usergroupDefault?: string | null;
+                    /** @description Can select multiple users or/and groups, if column is usergroup */
+                    readonly usergroupMultipleItems?: boolean | null;
+                    /** @description Can select users, if column type is usergroup */
+                    readonly usergroupSelectUsers?: boolean | null;
+                    /** @description Can select groups, if column type is usergroup */
+                    readonly usergroupSelectGroups?: boolean | null;
+                    /** @description Whether to show the user's status, if column type is usergroup */
+                    readonly usergroupShowUserStatus?: boolean | null;
                     /**
                      * @description View IDs where this column should be added to be presented
                      * @default []
@@ -2308,7 +2343,7 @@ export interface operations {
                      * @description Column main type
                      * @enum {string}
                      */
-                    readonly type: "text" | "number" | "datetime" | "select";
+                    readonly type: "text" | "number" | "datetime" | "select" | "usergroup";
                     /** @description Column sub type */
                     readonly subtype?: string | null;
                     /** @description Is the column mandatory */
@@ -2363,6 +2398,19 @@ export interface operations {
                      * @default
                      */
                     readonly datetimeDefault?: string | null;
+                    /**
+                     * @description Default value, if column is usergroup (json array{id: string, type: int})
+                     * @default
+                     */
+                    readonly usergroupDefault?: string | null;
+                    /** @description Can select multiple users or/and groups, if column is usergroup */
+                    readonly usergroupMultipleItems?: boolean | null;
+                    /** @description Can select users, if column type is usergroup */
+                    readonly usergroupSelectUsers?: boolean | null;
+                    /** @description Can select groups, if column type is usergroup */
+                    readonly usergroupSelectGroups?: boolean | null;
+                    /** @description Whether to show the user's status, if column type is usergroup */
+                    readonly usergroupShowUserStatus?: boolean | null;
                     /**
                      * @description View IDs where this column should be added to be presented
                      * @default []
@@ -2530,6 +2578,16 @@ export interface operations {
                     readonly selectionDefault?: string | null;
                     /** @description Default value, if column is datetime */
                     readonly datetimeDefault?: string | null;
+                    /** @description Default value, if column is usergroup */
+                    readonly usergroupDefault?: string | null;
+                    /** @description Can select multiple users or/and groups, if column is usergroup */
+                    readonly usergroupMultipleItems?: boolean | null;
+                    /** @description Can select users, if column type is usergroup */
+                    readonly usergroupSelectUsers?: boolean | null;
+                    /** @description Can select groups, if column type is usergroup */
+                    readonly usergroupSelectGroups?: boolean | null;
+                    /** @description Whether to show the user's status, if column type is usergroup */
+                    readonly usergroupShowUserStatus?: boolean | null;
                 };
             };
         };
@@ -4553,6 +4611,122 @@ export interface operations {
             };
         };
     };
+    readonly "api_columns-create-usergroup-column": {
+        readonly parameters: {
+            readonly query?: never;
+            readonly header: {
+                /** @description Required to be true for the API request to pass */
+                readonly "OCS-APIRequest": boolean;
+            };
+            readonly path?: never;
+            readonly cookie?: never;
+        };
+        readonly requestBody: {
+            readonly content: {
+                readonly "application/json": {
+                    /**
+                     * Format: int64
+                     * @description Context of the column creation
+                     */
+                    readonly baseNodeId: number;
+                    /** @description Title */
+                    readonly title: string;
+                    /** @description Json array{id: string, type: int}, eg [{"id": "admin", "type": 0}, {"id": "user1", "type": 0}] */
+                    readonly usergroupDefault?: string | null;
+                    /** @description Whether you can select multiple users or/and groups */
+                    readonly usergroupMultipleItems?: boolean;
+                    /** @description Whether you can select users */
+                    readonly usergroupSelectUsers?: boolean;
+                    /** @description Whether you can select groups */
+                    readonly usergroupSelectGroups?: boolean;
+                    /** @description Whether to show the user's status */
+                    readonly showUserStatus?: boolean;
+                    /** @description Description */
+                    readonly description?: string | null;
+                    /**
+                     * @description View IDs where this columns should be added
+                     * @default []
+                     */
+                    readonly selectedViewIds?: readonly number[];
+                    /**
+                     * @description Is mandatory
+                     * @default false
+                     */
+                    readonly mandatory?: boolean;
+                    /**
+                     * @description Context type of the column creation
+                     * @default table
+                     * @enum {string}
+                     */
+                    readonly baseNodeType?: "table" | "view";
+                };
+            };
+        };
+        readonly responses: {
+            /** @description Column created */
+            readonly 200: {
+                headers: {
+                    readonly [name: string]: unknown;
+                };
+                content: {
+                    readonly "application/json": {
+                        readonly ocs: {
+                            readonly meta: components["schemas"]["OCSMeta"];
+                            readonly data: components["schemas"]["Column"];
+                        };
+                    };
+                };
+            };
+            /** @description No permission */
+            readonly 403: {
+                headers: {
+                    readonly [name: string]: unknown;
+                };
+                content: {
+                    readonly "application/json": {
+                        readonly ocs: {
+                            readonly meta: components["schemas"]["OCSMeta"];
+                            readonly data: {
+                                readonly message: string;
+                            };
+                        };
+                    };
+                };
+            };
+            /** @description Not found */
+            readonly 404: {
+                headers: {
+                    readonly [name: string]: unknown;
+                };
+                content: {
+                    readonly "application/json": {
+                        readonly ocs: {
+                            readonly meta: components["schemas"]["OCSMeta"];
+                            readonly data: {
+                                readonly message: string;
+                            };
+                        };
+                    };
+                };
+            };
+            readonly 500: {
+                headers: {
+                    readonly [name: string]: unknown;
+                };
+                content: {
+                    readonly "application/json": {
+                        readonly ocs: {
+                            readonly meta: components["schemas"]["OCSMeta"];
+                            readonly data: {
+                                readonly message: string;
+                            };
+                        };
+                    };
+                    readonly "text/plain": string;
+                };
+            };
+        };
+    };
     readonly "api_favorite-create": {
         readonly parameters: {
             readonly query?: never;
diff --git a/tests/integration/features/APIv2.feature b/tests/integration/features/APIv2.feature
index 6b478c46d..ada139bd0 100644
--- a/tests/integration/features/APIv2.feature
+++ b/tests/integration/features/APIv2.feature
@@ -73,6 +73,12 @@ Feature: APIv2
       | subtype       | date                   |
       | title         | A single date          |
       | datetimeDefault | today                |
+    Then column from main type "usergroup" for node type "table" and node name "t2" exists with name "c7" and following properties via v2
+      | title                   | Cool usergroup column        |
+      | usergroupDefault        | [{"id": "admin", "type": 0}] |
+      | usergroupMultipleItems  | true                         |
+      | usergroupSelectUsers    | true                         |
+      | usergroupSelectGroups   | false                        |
     Then node with node type "table" and node name "t2" has the following columns via v2
       | Beautiful text column | Rich is cool | Counter | Progress | Checking | A single date |
     Then print register
@@ -93,8 +99,27 @@ Feature: APIv2
       | sel single  | sel multi |
     Then print register
 
+  @api2usergroup
+  Scenario: Create and modify usergroup columns
+    Given table "Table 5" with emoji "👋" exists for user "participant1-v2" as "t5" via v2
+    Then column from main type "usergroup" for node type "table" and node name "t5" exists with name "ug-c1" and following properties via v2
+      | title                  | ug column                 |
+      | usergroupMultipleItems | true                      |
+      | usergroupSelectUsers   | true                      |
+      | usergroupSelectGroups  | true                      |
+    Then node with node type "table" and node name "t5" has the following columns via v2
+      | ug column  |
+    Then print register
+    Then set following properties for last created column
+      | title             | ug column renamed               |
+      | mandatory         | 0                               |
+      | description       | New description                 |
+      | usergroupDefault  | [{"id":"admin","type":0}]       |
+    Then table has at least following columns
+      | ug column renamed |
+
   @api2transfer
-  Scenario: Create selection columns
+  Scenario: Transfer table
     Given table "Table 4" with emoji "👋" exists for user "participant1-v2" as "t4" via v2
     Then table "t4" is owned by "participant1-v2"
     Then change owner for table "t4" from user "participant1-v2" to user "participant2-v2"
@@ -543,6 +568,24 @@ Feature: APIv2
     When user "participant3-v2" attempts to fetch Context "c1"
     Then the reported status is "404"
 
+
+  @api1 @rows
+  Scenario: Create and modify usergroup row via v1
+    Given table "Usergroup row check" with emoji "👋" exists for user "participant1-v2" as "base1" via v2
+    Then column "one" exists with following properties
+      | type          | usergroup               |
+      | mandatory     | 0                       |
+      | description   | New description         |
+      | usergroupMultipleItems  | true          |
+      | usergroupSelectUsers    | true          |
+      | usergroupSelectGroups   | true          |
+    Then row exists with following values
+      | one           | [{"id":"admin","type":0}] |
+    Then set following values for last created row
+      | one           | [{"id":"admin","type":1}] |
+    Then user deletes last created row
+    Then user "participant1-v2" deletes table with keyword "Usergroup row check"
+
   @api2 @rows
   Scenario: Create rows via v2 and check them
     Given table "Rows check" with emoji "👨🏻‍💻" exists for user "participant1-v2" as "base1" via v2
@@ -566,11 +609,19 @@ Feature: APIv2
       | subtype       | date                    |
       | mandatory     | 0                       |
       | description   | This is a description!  |
+    And column "five" exists with following properties
+      | type          | usergroup               |
+      | mandatory     | 0                       |
+      | description   | This is a description!  |
+      | usergroupMultipleItems  | true          |
+      | usergroupSelectUsers    | true          |
+      | usergroupSelectGroups   | false         |
     When row exists using v2 with following values
       | one           | AHA                     |
       | two           | 161                     |
       | three         | true                    |
       | four          | 2023-12-24              |
+      | five          | [{"id": "admin", "type": 0}] |
     Then the reported status is 200
 
   @api2 @rows
@@ -596,6 +647,13 @@ Feature: APIv2
       | subtype       | date                    |
       | mandatory     | 0                       |
       | description   | This is a description!  |
+    And column "five" exists with following properties
+      | type          | usergroup               |
+      | mandatory     | 1                       |
+      | description   | This is a description!  |
+      | usergroupMultipleItems  | true          |
+      | usergroupSelectUsers    | true          |
+      | usergroupSelectGroups   | false         |
     And user "participant1-v2" shares table with user "participant2-v2"
     And user "participant2-v2" has the following permissions
       | read    | 1 |
@@ -608,6 +666,7 @@ Feature: APIv2
       | two           | 161                     |
       | three         | true                    |
       | four          | 2023-12-24              |
+      | five          | [{"id": "admin", "type": 0}] |
     Then the reported status is 200
 
   @api2 @rows
@@ -633,6 +692,13 @@ Feature: APIv2
       | subtype       | date                    |
       | mandatory     | 0                       |
       | description   | This is a description!  |
+    And column "five" exists with following properties
+      | type          | usergroup               |
+      | mandatory     | 1                       |
+      | description   | This is a description!  |
+      | usergroupMultipleItems  | true          |
+      | usergroupSelectUsers    | true          |
+      | usergroupSelectGroups   | false         |
     And user "participant1-v2" shares table with user "participant2-v2"
     And user "participant1-v2" sets permission "create" to 0
     And user "participant2-v2" has the following permissions
@@ -646,6 +712,7 @@ Feature: APIv2
       | two           | 161                     |
       | three         | true                    |
       | four          | 2023-12-24              |
+      | five          | [{"id": "admin", "type": 0}] |
     Then the reported status is 403
 
   @api2 @rows
@@ -671,11 +738,19 @@ Feature: APIv2
       | subtype       | date                    |
       | mandatory     | 0                       |
       | description   | This is a description!  |
+    And column "five" exists with following properties
+      | type          | usergroup               |
+      | mandatory     | 1                       |
+      | description   | This is a description!  |
+      | usergroupMultipleItems  | true          |
+      | usergroupSelectUsers    | true          |
+      | usergroupSelectGroups   | false         |
     When user "participant2-v2" tries to create a row using v2 with following values
       | one           | AHA                     |
       | two           | 161                     |
       | three         | true                    |
       | four          | 2023-12-24              |
+      | five          | [{"id": "admin", "type": 0}] |
     Then the reported status is 404
 
   @api2 @rows @views
@@ -701,12 +776,20 @@ Feature: APIv2
       | subtype       | date                    |
       | mandatory     | 0                       |
       | description   | This is a description!  |
+    And column "five" exists with following properties
+      | type          | usergroup               |
+      | mandatory     | 1                       |
+      | description   | This is a description!  |
+      | usergroupMultipleItems  | true          |
+      | usergroupSelectUsers    | true          |
+      | usergroupSelectGroups   | false         |
     And user "participant1-v2" create view "v1" with emoji "⚡️" for "t1" as "v1"
     When user "participant1-v2" tries to create a row using v2 on "view" "v1" with following values
       | one           | AHA                     |
       | two           | 161                     |
       | three         | true                    |
       | four          | 2023-12-24              |
+      | five          | [{"id": "admin", "type": 0}] |
     Then the reported status is 200
 
   @api2 @rows @views
@@ -732,6 +815,13 @@ Feature: APIv2
       | subtype       | date                    |
       | mandatory     | 0                       |
       | description   | This is a description!  |
+    And column "five" exists with following properties
+      | type          | usergroup               |
+      | mandatory     | 1                       |
+      | description   | This is a description!  |
+      | usergroupMultipleItems  | true          |
+      | usergroupSelectUsers    | true          |
+      | usergroupSelectGroups   | false         |
     And user "participant1-v2" create view "v1" with emoji "⚡️" for "t1" as "v1"
     And user "participant1-v2" shares view "v1" with "participant2-v2"
     When user "participant2-v2" tries to create a row using v2 on "view" "v1" with following values
@@ -739,6 +829,7 @@ Feature: APIv2
       | two           | 161                     |
       | three         | true                    |
       | four          | 2023-12-24              |
+      | five          | [{"id": "admin", "type": 0}] |
     Then the reported status is 200
 
   @api2 @rows @views
@@ -764,6 +855,13 @@ Feature: APIv2
       | subtype       | date                    |
       | mandatory     | 0                       |
       | description   | This is a description!  |
+    And column "five" exists with following properties
+      | type          | usergroup               |
+      | mandatory     | 1                       |
+      | description   | This is a description!  |
+      | usergroupMultipleItems  | true          |
+      | usergroupSelectUsers    | true          |
+      | usergroupSelectGroups   | false         |
     And user "participant1-v2" create view "v1" with emoji "⚡️" for "t1" as "v1"
     And user "participant1-v2" shares view "v1" with "participant2-v2"
     And user "participant1-v2" sets permission "create" to 0
@@ -772,6 +870,7 @@ Feature: APIv2
       | two           | 161                     |
       | three         | true                    |
       | four          | 2023-12-24              |
+      | five          | [{"id": "admin", "type": 0}] |
     Then the reported status is 403
 
   @api2 @rows @views
@@ -797,10 +896,18 @@ Feature: APIv2
       | subtype       | date                    |
       | mandatory     | 0                       |
       | description   | This is a description!  |
+    And column "five" exists with following properties
+      | type          | usergroup               |
+      | mandatory     | 1                       |
+      | description   | This is a description!  |
+      | usergroupMultipleItems  | true          |
+      | usergroupSelectUsers    | true          |
+      | usergroupSelectGroups   | false         |
     And user "participant1-v2" create view "v1" with emoji "⚡️" for "t1" as "v1"
     When user "participant2-v2" tries to create a row using v2 on "view" "v1" with following values
       | one           | AHA                     |
       | two           | 161                     |
       | three         | true                    |
       | four          | 2023-12-24              |
+      | five          | [{"id": "admin", "type": 0}] |
     Then the reported status is 404
diff --git a/tests/integration/features/bootstrap/FeatureContext.php b/tests/integration/features/bootstrap/FeatureContext.php
index cec7fd4c2..0414aa325 100644
--- a/tests/integration/features/bootstrap/FeatureContext.php
+++ b/tests/integration/features/bootstrap/FeatureContext.php
@@ -413,6 +413,7 @@ public function createColumnV2(string $nodeType, string $nodeName, string $colum
 
 		$newColumn = $this->getDataFromResponse($this->response)['ocs']['data'];
 		$this->columnIds[$columnName] = $newColumn['id'];
+		$this->columnId = $newColumn['id'];
 
 		Assert::assertEquals(200, $this->response->getStatusCode());
 
@@ -541,6 +542,10 @@ public function checkImportResults(TableNode $table): void {
 	 *
 	 */
 	public function printRegister(): void {
+		if (getenv('DEBUG') === '') {
+			return;
+		}
+
 		echo "REGISTER ========================\n";
 		echo "Tables --------------------\n";
 		print_r($this->tableIds);
@@ -1202,7 +1207,14 @@ public function updateColumn(?TableNode $properties = null): void {
 
 		Assert::assertEquals(200, $this->response->getStatusCode());
 		foreach ($props as $key => $value) {
-			Assert::assertEquals($column[$key], $value);
+			if (is_array($column[$key])) {
+				// I am afraid this is usergroupcolumn specific, but not generic
+				$retrieved = json_encode($column[$key], true);
+			} else {
+				$retrieved = $column[$key];
+			}
+
+			Assert::assertEquals($value, $retrieved, 'Failing key: ' . $key);
 		}
 
 		$this->sendRequest(
@@ -1213,7 +1225,14 @@ public function updateColumn(?TableNode $properties = null): void {
 		$columnToVerify = $this->getDataFromResponse($this->response);
 		Assert::assertEquals(200, $this->response->getStatusCode());
 		foreach ($props as $key => $value) {
-			Assert::assertEquals($columnToVerify[$key], $value);
+			// I am afraid this is usergroupcolumn specific, but not generic
+			if (is_array($columnToVerify[$key])) {
+				$retrieved = json_encode($columnToVerify[$key], true);
+			} else {
+				$retrieved = $columnToVerify[$key];
+			}
+
+			Assert::assertEquals($value, $retrieved, 'Failing key: ' . $key);
 		}
 	}
 
@@ -1253,7 +1272,17 @@ public function createRow(?TableNode $properties = null): void {
 		$rowToVerify = $this->getDataFromResponse($this->response);
 		Assert::assertEquals(200, $this->response->getStatusCode());
 		foreach ($rowToVerify['data'] as $cell) {
-			Assert::assertEquals($props[$cell['columnId']], $cell['value']);
+			// I am afraid this is usergroupcolumn specific, but not generic
+			if (is_array($cell['value'])) {
+				$retrieved = json_encode(array_reduce($cell['value'], function (array $carry, string $item): array {
+					$carry[] = json_decode($item, true);
+					return $carry;
+				}, []));
+			} else {
+				$retrieved = $cell['value'];
+			}
+
+			Assert::assertEquals($props[$cell['columnId']], $retrieved);
 		}
 	}
 
@@ -1429,7 +1458,17 @@ public function updateRow(?TableNode $properties = null): void {
 		$rowToVerify = $this->getDataFromResponse($this->response);
 		Assert::assertEquals(200, $this->response->getStatusCode());
 		foreach ($rowToVerify['data'] as $cell) {
-			Assert::assertEquals($props[$cell['columnId']], $cell['value']);
+			// I am afraid this is usergroupcolumn specific, but not generic
+			if (is_array($cell['value'])) {
+				$retrieved = json_encode(array_reduce($cell['value'], function (array $carry, string $item): array {
+					$carry[] = json_decode($item, true);
+					return $carry;
+				}, []));
+			} else {
+				$retrieved = $cell['value'];
+			}
+
+			Assert::assertEquals($props[$cell['columnId']], $retrieved);
 		}
 	}
 
diff --git a/tests/integration/run.sh b/tests/integration/run.sh
index e105a8826..17b7b8183 100755
--- a/tests/integration/run.sh
+++ b/tests/integration/run.sh
@@ -1,6 +1,7 @@
 #!/usr/bin/env bash
 
 APP_NAME=tables
+SCENARIO=$1
 
 APP_INTEGRATION_DIR=$PWD
 
@@ -74,7 +75,7 @@ echo ''
 echo '#'
 echo '# Running tests'
 echo '#'
-vendor/bin/behat --colors -f junit -f pretty
+vendor/bin/behat --colors -f junit -f pretty $SCENARIO
 RESULT=$?
 
 echo ''