Exit button target and hiding menu items

[he...@isn10.com]

How to change target of Exit-button in the room?
When user click Exit in the webinar room user will be redirected to the 
Public Room listing. I need user to be redirected to the Dashboard page.

I do already have knowledge of editing LZX files, but could not find 
where Exit button target/redirect is set.

How to hide/remove menu items from normal user? Normal user should not 
see any of naviglobal menu items, but admin need to see at least admin 
menu item.
Tried to change from database menu items levelid to 3 (admin), but did 
not affect for normal user.

Thanks!