Where can I set the payment gateway for our application fee?

Whether your school uses Admission Portal 2.0 or 3.0, you can update the payment gateway used for the application fee on the Admission Portal Config record on the System homepage.

Once opened, select a gateway to use from the Override ACH Provider and Override Credit Card Provider fields. If these fields are set to 'None', then the system uses the gateways configured on the back-end to be your default CC and ACH providers.