Bullpens are role-based rooms on the Sales Floor. By default, Vokkl sets up rooms for common sales roles: AE Room, AM Room, BDR Room, and CS Room, though admins can add more from the Sales Floor sidebar. Each room shows whether it's quiet (no one dialing) or live, and who created it.
Which bullpen you land in by default is typically tied to the team you've been assigned under Settings → Org → Teams.