How are invoices marked as paid in the Console?

If you have Authorize.net (like DirectPay, formerly Practice Pay Solutions) or PayPal configured in BILLING > TAB > Settings > “Merchant & PayPal” tab, and clients login to pay via the Console, then the invoices will be marked as paid automatically.

If the clients paid the invoices outside the Console, then you would need to go to those invoices in CONTACTS > CONTACT NAME > “Invoices” View All >  Click on the “VIEW” option to the left of the invoice and then use the “Add payment” button. Choose the method of payment from the drop-down list, select the method of payment, the transaction number/reference, and then click on the “Apply” button.