Automated Late Fees for Payment Plans

It would be extremely helpful if the system could have a way to apply automated late fees directly to the PAYMENT PLANS. I realize that there is an automated way for the system to do this elsewhere, but many studios are setting up payment plans as a way to charge specific monthly tuition fees, etc, to our clients, and have them pay off a large season balance. If their card is declined, or they fail to pay these AutoPay Payment Plans, there is no way but manually to add a late fee. This becomes a very arduous and time-consuming task.