Ogniem i Mieczem - By Fire and Sword

What happens if you have minus Supply Points?

And what happens if you have got plus Supply Points after choosing your army?

You are not allowed to have negative suply (Amy Creator should prevent you from printing rooster).

If you have surplus, you can use extra points to buy e.g. special models (medic, informer etc), but I do not remember if you can spend more than one on the extra special model.

Thanks, I haven't got as far as trying to print an army list yet but Army Creator allows me to have a minus Supply Points total.

Yeah, it just adds the points and gives you the summary.
There should be a warning somewhere that you have exceeded supplies.