There are two sections in the billing where you can set up automatic renewal of services and automatic billing.
1) Within each service there is an Auto-renewal option. There you can select the period for which the service will be automatically renewed at its end, provided there is enough money on the balance for the renewal.
2) In the “Balance information” section, if you select the desired account and click the setup button, a menu of automatic billing settings will open.
Here you can set up for which payer, for which payment method and under what conditions will be issued an invoice for payment of services.