Arrow Diagram:

Also called: activity network diagram, network diagram, activity chart, node diagram, CPM (critical path method) chart
Description:
The arrow diagram shows the required order of tasks in a project or process, the best schedule for the entire project, and potential scheduling and resource problems and their solutions. The arrow diagram lets you calculate the “critical path” of the project. This is the flow of critical steps where delays will affect the timing of the entire project and where addition of resources can speed up the project.
When to use Arrow Diagram
• When scheduling and monitoring tasks within a complex project or process with interrelated tasks and resources.
• When you know the steps of the project or process, their sequence and how long each step takes, and.
• When project schedule is critical, with serious consequences for completing the project late or significant advantage to completing the project early.