Open AI Copilot in the side menu and, in the credits panel, click Increase limit. The screen shows the one-time packages available, their current prices and how long they stay valid before you confirm.

Purchased credits accumulate and are only used after your plan's daily quota runs out. Team members use the owner's balance. Only the owner of an account on a paid plan can buy credits, and the purchase must be made in a browser.

To raise your daily quota, compare plans in My Subscription.