To apply a customer's account balance to recurring fees, go into the customer's profile and click Personal Information > Edit Account Info > Recurring Fees >check the box Use account balance.

This tells the system to apply account balance to membership fees, penalty fees, and add-on charges, before charging the credit card on file. If an account balance is insufficient, the system seamlessly charges the remaining amount to the credit card while ensuring no disruption in billing.

Customers can also make this change in their user profile. 

In the app, under Billing Information, they can select to have their account balance be applied to recurring fees first, before their credit card is charged.