Fixed flat discount to the whole credit note

Select this option to add a flat amount as a discount to the entire credit note.

Fixed percentage discount to the whole credit note

Select this option to add a percentage-based discount to the entire credit note. Currently this type of discount must be added after all other items in order to calculate the amount correctly.

Apply line-by-line discounts to specific items

Select this option to enable the discount column for each item on the credit note.