My company has rolled out our web-based timesheet software to hundreds of large companies. Usually it is for the use of a department or two, or for one division. Later people start to understand their costs better via our technology, other departments want in on the action and they buy licenses too.

When these follow-on departments do their rollouts, it happens in one of two ways:

1. They start all over and do it the way they want it.
2. They have some central and more experienced group roll it out on behalf of the new department.

We've found that in many cases the 2nd way above works better. In fact I'd call this a best practice for rolling out successive phases of a large software installation. Have a central team do it so the learning can be captured and processes more easily repeated.

Curt Finch has some timesheet patents, runs a timesheet software company and wrote a book about project management.