Seats and plan
Billing & Plan shows your plan, your seat limit, and how many seats are in use.
A seat is a person — one row in Admins or Developers — not a device. A developer with a laptop and a desktop uses one seat. Offboarded people don't hold a seat.
When you reach the cap, new invites are refused until a seat frees up. The screen shows the path to a larger band, or to talking to us if you're beyond the self-service sizes.