To disable panel configuration, set the /apps/panel/global/locked_down key to true.
When you disable panel configuration, the following changes occur in the user interface:
The following items are removed from the panel popup menu, and from the drawer popup menu:
Add to Panel
Delete This Panel
Properties
New Panel
The following items are removed from the popup menus for panel objects:
Remove From Panel.
Lock.
Move.
The Properties menu item is removed from the launcher popup menu.
The Main Menu popup menu is disabled.
The launcher drag feature is disabled, so that users cannot drag launchers to, or from, panels.
The panel drag feature is disabled, so that users cannot drag panels to new locations.