The Direct Approach
(also known as costing,
or the bottom-up approach)

Task Leaders are given a charter to initiate planning. They create the work breakdown structure, write specific objectives, produce networks and schedules, assign resources, and estimate manpower usage, equipment costs, travel expenses, then calculating the associated costs as a time-phased budget.

The Indirect Approach
(also known as pricing,
or the top-down approach)

Task Leaders start with an allocated budget, and then scope the tasks, manpower, equipment, and technology to match the budget.