How do I Process Payments for a Client That Wants to Pay Using Two Different Credit cards?

Invoicing/Payment - If you have a customer who needs to split payments between credit cards for their cleaning, that would need to be handle through your credit card processor.

Inside of MaidCentral you would set that customer's billing terms to something other than Credit Card, Invoice for example. You would then have to process the charges manually through your credit card processor, and record the separate payments manually in Quickbooks Online (QBO).  This would then show the invoice as paid via the Quickbooks link in MC.