To process recurring payments or transactions (1-click, Subscription, Installment…), first you must create a customer in which one or more cards can be associated. This operation takes place after a first successful transaction.
When paying by subscription or installment, the card holder automatically receives an email containing the details of his payments. This email also contains a link to a portal dedicated to the consumer which allows him to view the status of his recurring payments, change his payment card and terminate a subscription if necessary. A non-dedicated URL is also open to all CentralPay Customers: https://customer.centralpay.net/
For more informations, check "customer" object