I must be doing something wrong (or not doing something). When I try and make a postage discount on an invoice, it doesn't work.
The bottom line says
Seller discounts (-) or charges (+).
So if I want a 50p discount, what should I type into that box? I have tried putting (-)0.50 and (-0.50) but when I press recalculate, it doesn't make any difference.
Anyone better at this than me?