Address feedback

Author: dominicbetts

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

@@ -36,6 +36,9 @@ For more information, see [Microsoft account help](https://support.microsoft.com
     > [!div class="mx-imgBorder"]
     >![Add user and select a role](media/howto-manage-users-roles-pnp/add-user-pnp.png)
 
+    > [!NOTE]
+    > A user who is in a custom role that grants them the permission to add other users, can only add users to a role with same or fewer permissions than their own role.
+
 ### Edit the roles that are assigned to users
 
 Roles can't be changed after they're assigned. To change the role that's assigned to a user, delete the user, and then add the user again with a different role.