Navigate to Transaction
Then click on the "Credit Transaction>>Paid By Insurance" link.
A pop-up will then appear and the user can enter the patient number or name.
Once the user is selected then it will redirect to the "Paid by Insurance page", here once mandatory details are filled and submit button is clicked, then pop-up will appear where "W/O remaining amount to $0.00" button is available. Users can write off the amount from here.