To Customize or Discount an invoice, go to the Job Ticket. At the bottom of the Job Ticket, select the Invoice Menu drop-down and choose one of the following:
Update Ticket Details: This will allow you to update the Package and Add-On selection.
Apply Discount Code: This will allow you to add one of your existing Promo Codes.
New Invoice Line: This will give you the ability to add a new charge or give a credit when necessary.
