How to account for Square credit card payment fees (edited)

I have a square checking account that my clients' payments go into. It is linked to my quicken. When I take a credit card payment a fee is withdrawn before the amount is deposited into my checking account. How can I account for this fee on quicken when it doesn't show on my transactions? Would I just enter a smaller payment on my client invoice. This isn't good for accurate bookkeeping purposes. When I used quickbooks, I set up a dummy account that I entered client payments into. I then entered the interest charge as an expense and after would transfer the remainder amount to my real checking account. Any advice for how to do it in quicken?