To Change Billing in a Group:
When signed in to your Backblaze admin account, go to the “Group Management” page and locate the Group you want to change the billing information for. Under the Groups' name next to "Payment" select “Edit”.
A form will appear that will allow you to change the billing information and/or select a new plan. Please note that if you switch your plan, the change in billing will take effect on your next renewal date.