Add and remove seats
Seats are billed monthly and prorated on the day you change them.
Open Billing and enter the number of seats you want to add. Seats are prorated to the day, so adding six seats halfway through a billing period costs half a period.
Removing seats takes effect at the end of the current period. The people occupying removed seats keep access until then, and any store credit from a downgrade is applied to your next invoice automatically.