Use KIOSK
Kiosk will allow you to edit the global menu and it will affect ALL users since the new global will rewrite all user menus when Kiosk saves it. So unless you eliminate the ability for users to edit their menus (which can also be done in kiosk) then the user menu can be changed after the rewrite.
--Shaun
It isn't about it being free, rather its about the freedom it brings.