Trying to get up to date with Sage on a bank holiday was asking for trouble!
We ordered some products from a company. They were offered us a discount of £10 off our next order as a sales incentive. I had just made a product order and they just said to lop £10 off the total purchase price of the items, which I did.
I can't see where or how to record a discount as an absolute amount off a total order rather than a percentage.