Navigation
Custom payment types are located within the Settings menu in the Back Office. Get there by selecting the Settings icon in the top right corner while logged into the Back Office.
Then find and select the Options Tab along the top.
The select the Payment Types subsection.
About Custom Payment Types
There are default payment types built into the system, but you can add up to 5 more. Keep in mind that custom payment types can not be voided, returned, used for payouts, or pay-ins.