as we like the style of discussion coming up to several topics, a lot customers we work with, make us work with an NDA. So we are not allowed to discuss work related stuff with people, that did not sign this NDA. Ok. We could go with Private Groups. BUT: this is invite only. Sometimes it would be helpful to be able to "see" that there are several topics that might be of my intrest, so i would like to ask the admin to let me join. So I would like to have different "Channel Modes" like : administrate channe users, show Channel in Channel list etc.