Nextcloud Talk - Prohibit a user group to create chatrooms

Hello together,

I have a question about Nextcloud Talk.
Is it possible to prohibit a user group from creating new chats?
There is an option that new public groups cannot be created by a user group, but we would like a certain user group not to be allowed to create a new chat at all, but only to participate in existing group chats.

Thank you Thoys