This article will walk you through taking a payment from a client with multiple payment methods.
In the billing tab, right click and select Post Payment. The patient has decided to pay $25 in cash and $25 on their debit card. You will want to change the payment amount to $25 and have the payment type set to Cash:
Select OK and choose YES to bypass the payment warning. The charge will now have half a blue circle indicating that the charge is partially paid and the remaining balance will be reflected at the bottom:
You'll want to right-click to select Post Payment again - the payment amount will default to 25 since that is all that is left owing:
Select OK and your charge will be fully paid! The receipt will reflect both payments: