Feature Suggestion: Now, when someone creates a chat room, he automatically sees ALL user groups and can click who can join them. The fact, that any user can see ALL user groups is not very desirable, especially when certain levels are of administrative nature and secret for example.
It would be great to freely "narrow" down the available user groups in ACP. So I can pre-check the user groups in ACP and the user that creates a group can then select from the range of my pre-selection.