How to add a credit note on a specific invoice to give credit to the resident?

• Click on "Account" 
• Click on “Dues and Receipts”
• Click on "Dues"
• Select the Flat 
• Click on "Options" 
• From dropdown, select "Add Credit Note"
• Select Date 
• Enter Description
• Select the Invoice to which the credit has to be added 
• Click on the "Add" button.