Document remote server network access setup

REMOTE.md

@@ -12,7 +12,22 @@ That gives you:
 - transport security at the network layer
 - less exposure than opening the server to the public internet
 
-## Headless Server Flow
+## Enabling Network Access
+
+There are two ways to expose your server for remote connections: from the desktop app or from the CLI.
+
+### Option 1: Desktop App
+
+If you are already running the desktop app and want to make it reachable from other devices:
+
+1. Open **Settings** → **Connections**.
+2. Under **Manage Local Backend**, toggle **Network access** on. This will restart the app and run the backend on all network interfaces.
+3. The settings panel will show the address the server is reachable at (e.g. `http://192.168.x.y:3773`).
+4. Use **Create Link** to generate a pairing link you can share with another device.
+
+### Option 2: Headless Server (CLI)
+
+Use this when you want to run the server without a GUI, for example on a remote machine over SSH.
 
 Run the server with `t3 serve`.