A payment surcharge is where different methods of payment are created and rules applied.
A single payment is often the default method, where a subscription notice is issued and a single payment is received.
Alternative methods can be created by the club.
The Payment Methods are firstly set up in:
Club | Setup | Payment Method

Click on
to create a payment method.

Give the method a description and allocate the payment to the Cash Account.
Then click on ![]()
Now go to:
Planned Year Charges | Payment Surcharges
This is where the rules are set up for the Payment Methods.