It's easy to view your plan and make changes from the Manage Bill page in the SmartVault Portal. See your usage, licenses, bill dates, and invoices. You can change plan types, add licenses (user, client, guest) or storage.
After completing this how-to you will know where you can access Billing.
You must be a SmartVault Administrator in order to view account usage information. If you do not see a Usage section in the right task pane when you click on your account, then your SmartVault user ID is not a member of the SmartVault Administrators group for the account.