After the project charter is approved and the project manager assigned, the project manager and team are breaking down project work packages. What is the project manager doing?

Decomposition is the process of breaking down project work into smaller, more manageable components. This is precisely what the project manager and team are doing when they break down work packages. The Work Breakdown Structure (WBS) is the hierarchical decomposition of the total scope of work to be carried out by the project team to accomplish the project objectives and create the required deliverables. Decomposition is the technique used to create the WBS. Resource leveling is a technique used to optimize resource allocation, not to break down work. A network diagram is a graphical representation of the logical relationships among project schedule activities, not a method for breaking down work packages.