Seats, teams and shared credit
What a seat buys, why balances are account-scoped, and how larger arrangements differ.
Prices are per seat, and a seat is a person rather than an agent. Adding agents does not add seats; adding colleagues does. A plan's maximum-agents figure is the separate limit on how many agents a workspace may hold.
Balances follow the account, not the workspace
Your credit balance is account-scoped. Switching workspaces does not switch balance, and a workspace you opened to experiment in draws on the same balance as the one answering real customers. That is why a sandbox workspace still needs sensible ceilings.
Minimum seats
Some plans carry a minimum seat count and some do not — business plans generally do, individual plans generally do not. Where one applies it is shown on the pricing page beside the figure, because a per-seat price with an unstated minimum is a misleading price.
Larger arrangements
Enterprise credit can be shared across a billing hierarchy, which is what lets several teams draw on one arrangement while keeping their workspaces isolated from each other. The isolation is unchanged by the sharing: workspaces still see nothing of one another, and the sharing is about where the credit comes from rather than what anybody can read.