Once your customer has signed up for an online portal, they can manage their payment methods and enroll in AutoPay.

On the customer portal home screen, select PAYMENTS

The customer will need to add a Payment Method:

Credit Card or ACH (bank to bank transfer are an option)

Once the payment method is saved, the customer can then toggle on the option to use AutoPay. Make sure to select SAVE after the AutoPay feature is toggled on.