From build 35.17, you'll be able to set different access level for your admin staff using /setaccesslevel "username" "accesslevel" option or directly inside the server database.
List of access level possible: admin, moderator, overseer, gm, observer.
This is what they all can do:
(please note this list is subject to changes, this post is also to discuss about them)
Observer:
Toggle god mod (on himself only)
Toggle invisible (on himself o