How to View Your Billing Information.
System Adminsitrators can quickly view your billing infrmation stored on your LMS by selecting the Manage Subscriptions link from the Admin Tools page.
Here a System Administrator can view their User Counts and Limits and Subscription Details. 
Managing Payment Methods
Clicking the Add Update Payment Methods Link will take you to the Billing Information Page. here you can store a CC to your session Profile and easily purchase more seats to expand your LMS reseller Group. 
Click the "Add a Card" Link to Save a new CC profile. All CC data is tokenized and stored as a profile, which links to Authorize.net - our secure payment gateway.
More details about Authorize.net here:
https://www.authorize.net/resources/our-features/secure-customer-data.html