Can I purchase additional slots on a Teams account?
Yes, you can purchase additional slots by clicking on the "Add slots" button. After purchasing the required slots, you can invite members by clicking on the "Invite member" button. Slots will be immediately available.
You will immediately be billed pro-rata for the additional slots until your next billing date. Your pro-rata payments can be viewed in the "Payment" tab. All re-occurring subscriptions will then be due at the same time and date at the next payment interval.
Additional slots will be added to your recurring billing.
See an example of pro-rate payment displayed in "Payment history" below: