The project management schedule is a document that outlines what work needs to be done, the order in which it needs to be done, what resources are required, how they will be distributed, and how long different parts of the work will take. The schedule helps project managers communicate and collaborate with team members and stakeholders, and keeps the project on track.

More specifically, a project schedule covers:

Project milestones
Deliverables
Tasks required to complete the deliverables
Dependencies between tasks and milestones
Resource requirements and allocation
Deadlines, time frames, and task durations

Essential steps for creating project schedule:
1. Hold a brainstorming meeting.
2. Determine clear, measurable milestones
3. Create a WBS that includes all project deliverables.
4. Outline and sequence all tasks/activities.
5. Define the critical path.
6. Estimate task duration.
7. Estimate resources.
8. Note assumptions
9. Determine and document risks.
10. Review and revise schedule.