Go to the customer's profile, click on receive money, select the invoice you would like to post payment to.
After selecting the invoice, select the payment method
If you want to charge the customer for multiple outstanding invoices, follow the steps here.
You can also open up the payment details for invoice from many different locations in the system
Scheduled Services, History->Services, Invoices
2. Billing Information->Payment History
Payment Details
Hit the + Payment button to select the payment method and enter the amount.
Once you have selected your payment method, enter the amount you are charging. Once you enter the amount you are charging, click with your mouse or finger anywhere outside of the text box (on the white portion of the screen) and the Save and Process Payment will become active and not be grayed out anymore.
You can add multiple payment methods. If they want to put some on a card and some on check or if they have account credit, you can apply the account credit and then do the rest on card, ACH, check, or cash. Just hit the + Payment button again to add another payment method and amount.
Financial->Unpaid Invoices
Once you post a payment in the unpaid jobs report, it will mark it as paid and then erase it from this report.