Tom is the owner and has two crews of two people each. Each crew is assigned their own van.
On each crew, one person is the team leader/electrician and the other an electrician. Tom
himself sometimes acts as a crew of one electrician using his truck. There is one
supply/maintenance person (referred to as Supply in this document) who is responsible for
ordering and maintaining electrical supplies as well as maintaining the company’s vehicles.
The company has several categories of jobs – commercial vs. residential and planned vs. ad hoc.
Normally all the commercial jobs are planned, while the residential jobs could be planned or ad
hoc. The customers are categorized as “new” or “existing”.