When a new team is created in Flock, all team members are automatically added to two channels -TeamHub and Announcements. While you can create as many channels as you need, these default channels serve an important purpose.
A channel for all members to talk to one another, share information, and welcome new members. Team members can leave this channel and still be a part of the team.
A read-only channel where admins share important updates for your team/organization. Team members cannot post messages or leave this channel unless they leave the team.
Team Admins can choose to create more auto-join and announcement channels for their team.