Did your client pay you for this invoice already? If so, check out the next two steps to add a payment to the invoice.
1. Click on the “Invoices” tab again to see the invoice you just created. Select it by putting a checkmark in the checkbox to the left of it and then click the grey “Enter Payment” button.
2. Enter the payment details for the invoice on this screen and hit “Save”. Enabling the payment notification email will send your client a receipt for their payment.