Hi @lfbrock,
thanks for the reply..
We need an open chat using mattermost where members are treated as guest. They don't share any information each other and the only purpose is to enter in that community chatroom or be contacted by our team/staff and talk in the open chat. No access to any kind of setting of the channel. We need to directly point guest visiting the project to that open guest chat to lower the entry barrier (registration choosing a team etc...) of the project.