What process is included in Project Schedule Management?

The Project Schedule Management knowledge area includes six processes: Plan Schedule Management, Define Activities, Sequence Activities, Estimate Activity Durations, Develop Schedule, and Control Schedule. Estimate Activity Durations belongs here because it directly feeds time estimates into the schedule development process.

Create Work Breakdown Structure is part of Project Scope Management, not Schedule Management - it decomposes deliverables, not activity durations.

Direct and Manage Project Work belongs to Project Integration Management, covering the execution of the project management plan.

Estimate Activity Resources was moved to Project Resource Management in PMBOK 6th edition - it is no longer part of the Schedule Management knowledge area.