Job subtypes give you even finer detail when you create reports about your
jobs. A contractor, for example, might set up job subtypes like this:
Deck:Douglas Fir Painted
Here, "Deck" is the parent type, and "Redwood Natural"
and "Douglas Fir Painted" are the subtypes. You would create the
subtypes if you needed to track costs and revenues for redwood deck jobs
separately from Douglas fir deck jobs. Of course, if the distinction wasn't
important to you, the single job type "Deck" would suffice.