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All projects need written schedules.
To create a schedule, you must determine two things:

  1. The order in which tasks and events must occur, and

  2. The time it will take to do them.

Determining these requires communications.

Schedules are also fundamental to project control. Schedules will be used to determine what tasks occur next, for tracking status, and for reporting to stakeholders. So, the primary purpose of a schedule is for good communications. Think of what you do with a schedule. You put it in reports, post it in the Project Office, and show it on PowerPoint. Therefore, the schedules that emerge from the planning process should be tailored for the different stakeholders and be ready for immediate use.