This is a Mumble Moderator module.
A user who gets the sticky status can't do more than sitting in one special channel. Even admins will loose their permissions while sticked with this module :)
This module is a port to MuMo of https://github.com/Natenom/murmur-sticky.
The Script and the .ini-File can be downloaded from Github, see https://github.com/Natenom/mumblemoderator-module-collection/tree/master/sticky-contextmenu.
Right click on the user and select „Stick this user“.
Right click on the user and select „Unstick this user“.
Click on „Server“ in the Mumble menu, then on „List sticked users“.
This script uses temporary group membership because you can very easily fuck up your server :P using permanent groups.