In your admin panel, you can get more details about a print job. For instance, you can see how the print job was paid.
In your admin panel on either the dashboard or history, can hover the mouse over "details" on the print job and it will show you more details about the print job. You can also see if it was paid at the desk or if it was paid electronically.
Payment method: At desk - This means the print job was paid at the desk.
Payment method: Electronic - This means the print job was paid electronically for instance with a credit card, PayPal or some other form of digital payment.