Work with Payments Automate E-check Returns Manually Process a Credit Card How to manually charge a credit card using the BillMax Staff Portal Manually Process an Electronic Check How to manually draft a bank account via an electronic check using the BillMax Staff Portal Book a Payment while Viewing an Account How to book a cash, check or other payment received outside of BillMax using the BillMax Staff Portal while viewing an Account. Book Payments for Multiple Accounts How to rapidly book cash, check or other payments received outside of BillMax using the BillMax Staff Portal. Book Payments from Scanned Checks Book Payments Using a Nacha File How to book echeck payments and upload them to a bank via a Nacha file for processing. Book a Payment Reversal How to book an NSF Check or Credit Card Chargeback Correct a non-Settled Credit Card or Electronic Check Payment Correct a Settled Credit Card or Electronic Check Payment Resolve a Credit Card or Electronic Check Transaction Flagged as Held Resolve a Credit Card or Electronic Check Transaction Flagged as Unknown