To setup USAePay you will need to create a key and pin
Log into USAePay: https://www.usaepay.com/login
Select “Settings” in the top nav
Select “Source Keys” in the secondary nav
Select “Add Source”
Name your source “Online Payments”, and add a secret pin e.g. “12345”, click “Save”.
Copy the “Key” from the list of sources, and the pin you created into the Online Payments configuration screen in the setup boxes.
You can set up other payment methods like ACH that you might have enabled on your account.