To track registrants who use an offline payment method we use the same Registration Window that we use for free and credit card registrations. The Registration Window has two sections separating completed from pending payments. Those who register and pay by credit card will be automatically added to the "Completed" list. Any registrants who use an offline payment method will appear in the "Pending Payment" list indicating their chosen method of payment and the amount they have agreed to pay.
To mark an attendee as paid, click on their name to view their registration. At the top of the Registration Detail page, you will have see "Payment not received" in red letters as well as an option to mark the registrant as paid. It is important to note that once a registrant has been marked as paid, you cannot undo this process.
Once the registration is marked as paid, the attendee will appear in the completed section in your Registration window.