To disable panel configuration, set the /desktop/gnome/lockdown/lockdown_panel_config 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 Properties menu item is removed from the launcher popup menu.
The following items are removed from the applet popup menu:
Remove From Panel
Lock
Move
The Main Menu popup menu is disabled. To display this popup menu, right-click on the Main Menu button.
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.