How a discount row's type and category work
Set a discount row as an absolute amount or a percentage, and choose the woodwork category to apply it only to the woodwork portion of the quotation.
A discount row's type can be set to either an absolute amount or a percentage from a drop-down.
A discount row can be entered either as a percentage or as an absolute amount, chosen on the row itself.
Choosing the woodwork category applies that discount only to the woodwork portion of the quotation.