Project Resource Management Tools and Techniques

For software projects and other types of knowledge work where the schedule and task details are changing often, aim for a resource plan that is tied to high-level activities only. Try to get key resources who are dedicated to your project for longer blocks of time, and then make it your business to ensure they always have the right work to do. Fiddling with schedules is bad enough without also having to micro-manage a resource plan.

Of course, this approach suggest lean and agile PM processes, but if you’re stuck with waterfall, think lean anyway.