Add Data Explorer RBAC notes.

This reverts commit ec7c1de.

Author: dominicbetts

articles/iot-central/core/howto-create-analytics.md

@@ -16,6 +16,9 @@ ms.custom: [iot-central-frontdoor]
 
 Azure IoT Central provides rich analytics capabilities to analyze historical trends and correlate telemetry from your devices. To get started, select **Data explorer** on the left pane.
 
+> [!NOTE]
+> Only users in a role that have the necessary permissions can view, create, edit, and delete queries. To learn more, see [Manage users and roles in your IoT Central application](howto-manage-users-roles.md).
+
 To learn how to query devices by using the IoT Central REST API, see [How to use the IoT Central REST API to query devices.](../core/howto-query-with-rest-api.md)
 
 ## Understand the data explorer UI

articles/iot-central/core/howto-manage-users-roles.md

@@ -274,6 +274,16 @@ When you define a custom role, you choose the set of permissions that a user is
 | Delete | View   |
 | Full Control | View, Update, Create, Delete |
 
+**Data explorer permissions**
+
+| Name | Dependencies |
+| ---- | -------- |
+| View | None <br/> Other dependencies: View device groups, device templates, device instances |
+| Update | View <br/> Other dependencies: View device groups, device templates, device instances |
+| Create | View, Update <br/> Other dependencies: View device groups, device templates, device instances |
+| Delete | View <br/> Other dependencies: View device groups, device templates, device instances |
+| Full Control | View, Update, Create, Delete <br/> Other dependencies: View device groups, device templates, device instances |
+
 **Branding, favicon, and colors permissions**
 
 | Name | Dependencies |