set title to Custom Chatrooms, set status to In Progress, assigned Paril.
Allowing members to create custom chat rooms is planned, but they will not be able to make public channels off the bat. It will be limited to invites and friends.

Please don't open a ticket with multiple feature requests; it means that we can't properly figure out when and how to handle the ticket. I've renamed your ticket to reflect your first idea, and I recommend you request the second feature in another ticket. Thanks!