Custom columns to auto-calculate and hold values of two other "number" columns, meaning that you have formula column adding/Subtracting... two other "number" columns...
Case-in-point: The Favro "Sales CRM" template has a series of columns laid out:
[Deal size] x [Close probability] = [Forecasted Value]... does not auto calculate!, meaning there is no formula calculating [Forecasted Value]
So does that mean that someone has to manually calculate each record?