Apply multiple invoice payments to one deposit

Hello,

I am using Simplifi exclusively for my business. I have 4 customers that paid their invoices, so 4 invoices have been paid. I deposited 4 checks into my savings account at my bank and now the deposit transaction has cleared. I cannot figure out how to apply the 4 invoices to a single deposit. When I attempt to do this, I can apply a single invoice payment to this deposit but it then places a credit balance on this single customer, which I do not want.

How do I apply multiple invoice payments to a single deposit?

Thanks in advance!