How to process a one-time custom payment for a customer in the Backoffice?

Step 1: Click on Monthly >> Accounts from the left side menu of the screen

Step 2: Click on the Monthly Customer Account 

Step 3: Click on Payment tab >> Virtual Terminal tab >> Click on Custom Amount 

Step 4: Fill in the Custom Amount Payment and select the Payment Method. Then click on Process Payment.

Step 5: Make sure the payment was processed correctly in the Collect Payment view, click Done

Step 6: The payment will be created in the Billing tab

Step 7: A Payment Received email will be sent to the customer with the Payment Receipt