[DOCS] Puts Spaces content on single page (#41536) (#41812)

* [DOCS] Puts Spaces content on single page

* [DOCS] Incorporates review comments

* [DOCS] Incorporated review comments

docs/security/authorization/index.asciidoc

@@ -14,6 +14,7 @@ NOTE: When running multiple tenants of Kibana by changing the `kibana.index` in
 
 To create a role that grants {kib} privileges, go to **Management -> Security -> Roles** and click **Create role**. 
 
+[[adding_kibana_privileges]]
 ==== Adding {kib} privileges
 
 To assign {kib} privileges to the role, click **Add space privilege** in the Kibana section.

docs/spaces/index.asciidoc

@@ -2,28 +2,119 @@
 [[xpack-spaces]]
 == Spaces
 
-With spaces, you can organize your dashboards and other saved objects into meaningful categories.
-After creating your own spaces, you will be asked to choose a space when you enter Kibana. 
-Once inside a space, you will only see the dashboards and other saved objects that belong to that space. 
+Spaces enable you to organize your dashboards and other saved 
+objects into meaningful categories. Once inside a space, you see only 
+the dashboards and saved objects that belong to that space. 
 
-You can change your current space at any time, by clicking on the space avatar in the top left.
+{kib} creates a default space for you. 
+After you create your own 
+spaces, you're asked to choose a space when you log in to Kibana. You can change your 
+current space at any time by using the menu in the upper left.
 
 [role="screenshot"]
 image::spaces/images/change-space.png["Change current space"]
 
-With security enabled, you can <<xpack-security-authorization, control which users have access to individual spaces>>.
+Kibana supports spaces in several ways.  You can:
 
+[[spaces-getting-started]]
+
+* <<spaces-managing, View&comma; create&comma; and delete spaces>>
+* <<spaces-control-feature-visibility, Control feature access based on user needs>>
+* <<spaces-control-user-access, Control feature access based on user privileges>>
+* <<spaces-moving-objects, Move objects between spaces>>
+* <<spaces-delete-started, Disable the Spaces feature>>
 
 [float]
-[[spaces-getting-started]]
-=== Getting Started
+[[spaces-managing]]
+=== View, create, and delete spaces
+
+Go to **Management > Spaces** for an overview of your spaces.  This view provides actions 
+for you to create, edit, and delete spaces.
+
+[role="screenshot"]
+image::spaces/images/space-management.png["Space management"]
+
+[float]
+==== Create or edit a space 
+
+You can create as many spaces as you like. Click *Create a space* and provide a name, 
+URL identifier, optional description. 
+
+The URL identifier is a short text string that becomes part of the 
+{kib} URL when you are inside that space. {kib} suggests a URL identifier based 
+on the name of your space, but you can customize the identifier to your liking.
+You cannot change the space identifier once you create the space.
+
+{kib} also has an <<spaces-api, API>> 
+if you prefer to create spaces programatically.
+
+[role="screenshot"]
+image::spaces/images/edit-space.png["Space management"]
+
+[float]
+==== Delete a space
+
+Deleting a space permanently removes the space and all of its contents. 
+Find the space on the *Spaces* overview page and click the trash icon in the Actions column.
+You can't delete the default space, but you can customize it to your liking.
+
+[float]
+[[spaces-control-feature-visibility]]
+=== Control feature access based on user needs
+
+You have control over which features are visible in each space. 
+For example, you might hide Dev Tools 
+in your "Executive" space or show Stack Monitoring only in your "Admin" space.
+You can define which features to show or hide when you add or edit a space.
+
+Controlling feature 
+visibility is not a security feature. To secure access 
+to specific features on a per-user basis, you must configure 
+<<xpack-security-authorization, Kibana Security>>.
+
+[role="screenshot"]
+image::spaces/images/edit-space-feature-visibility.png["Controlling features visiblity"]
+
+[float]
+[[spaces-control-user-access]]
+=== Control feature access based on user privileges
+
+When using Kibana with security, you can configure applications and features 
+based on your users’ privileges. This means different roles can have access 
+to different features in the same space. 
+Power users might have privileges to create and edit visualizations and dashboards, 
+while analysts or executives might have Dashboard and Canvas with read-only privileges.
+See <<adding_kibana_privileges>> for details.
+
+[role="screenshot"]
+image::spaces/images/spaces-roles.png["Controlling features visiblity"]
+
+[float]
+[[spaces-moving-objects]]
+=== Move saved objects between spaces
+Use {kib}'s <<managing-saved-objects-export-objects, import/export>> 
+interface to copy objects from one space to another.
+
+. Navigate to the space that contains your saved objects.
+. Export your saved objects via the import/export interface.
+. Navigate to the space where you want to import the objects.
+. Import your saved objects via the import/export interface.
+. (Optional) Delete objects in the export space that you no longer need.
+
+{kib} also has experimental <<dashboard-import-api-import, import>> and 
+<<dashboard-import-api-export, export>> dashboard APIs if you want
+a dashboard-centric way to automate this process.
+
+
+[float]
+[[spaces-delete-started]]
+=== Disable and version updates
 
-Spaces are automatically enabled in {kib}. If you don't wish to use this feature, you can disable it
-by setting `xpack.spaces.enabled` to `false` in your `kibana.yml` configuration file.
+Spaces are automatically enabled in {kib}. If you don't want use this feature, 
+you can disable it
+by setting `xpack.spaces.enabled` to `false` in your 
+`kibana.yml` configuration file.
 
-{kib} automatically creates a default space for you. If you are upgrading from another 
-version of {kib}, then the default space will contain all of your existing saved objects. 
-Although you can't delete the default space, you can customize it to your liking.
+If you are upgrading your 
+version of {kib}, the default space will contain all of your existing saved objects. 
 
-include::managing-spaces.asciidoc[]
-include::moving-saved-objects.asciidoc[]