Follow these steps to save Customer Credit Cards:

- From the Dashboard, select "Customers."

- While on the "Customers" page, select the Customer whose Credit Card you would like to save.

- You will now be on the "Customer Details" page; while on this page, select the "Add New" button located in the "Payment Info" field on the "Customer Details" section. 

- When the "Add Payment Info" pop-up appears, enter the Customer's Credit Card information.

- When finished, press the "Save" button.