Auto-pay for any payments that are due Merged

Because many of our clients have different payment plans, we have chosen to post tuition manually for everyone at the start of the season. Payments are due on different dates throughout the season but all are listed on their account. It would be super convenient to be able to use auto-pay for anything that has a due date of today or past due based on the due date that we have listed. Without this feature, our studio is unable to use auto-pay because it will charge our clients for their entire season.