How do I edit a payment?

Select the Accounting tab on the main menu
Click on the desired client
You will now be viewing the client's billing history. The billing history will list all of the client's credits (Payments and Credit Balance Adjustments) and debits (Invoices & Debit Balance Adjustments)
Click the desired payment and the payment window will pop-up
Click the Edit button at the bottom right
Make the necessary changes to the payment (Please note: If the payment has already been applied to one or more invoices, you should first delete the applied line items.)
Check the box on the left next to the invoice(s) you would like the payment applied to
Click Save