Step 2: Activity Sequencing involves the accurate identification of constraints/relationships among activities and establishing the order in which the activities will be accomplished. There are several inputs to this step: [1]

• The activity list developed in the Activity Definition step,
• The product description and characteristics,
• Mandatory constraints/dependencies, such as the fact that a prototype must be fabricated before it can be tested,
• Discretionary constraints/dependencies developed by the program management team based on “best practices” or specific sequences desired by management,
• External dependencies, such as availability of test sites, and
• Other constraints and assumptions.

A number of tools and techniques are useful in developing the logic diagrams that reflect the desired activity sequencing. They include various network scheduling techniques that can be used to include: [1]

• Critical Chain Method (CCM)
• Critical Path Method (CPM)
• Precedence Diagram Method (PDM)
• Program Evaluation and Review Technique (PERT)

There are a number of scheduling software programs available that develop activity sequencing. A few of the popular ones are:

• FastTrack Schedule 9
• Microsoft Project
• Primavera
• ZOHO Projects

Schedule Development Steps

• Step 1: Activity Definition
• Step 2: Activity Sequencing
• Step 3: Activity Duration Estimation
• Step 4: Schedule Development
• Step 5: Schedule Control

AcqLinks and References:

• [1] Defense System Management College “Scheduling Guide for Program Managers” – Oct 2001
• DoD “Integrated Master Plan and Integrated Master Schedule Preparation and User Guide” – 21 Oct 2005
• CDC “Project Scheduling Best Practices/Guide” – 30 Jun 2007
• GAO 12-120G “Schedule Assessment Guide: Best Practices for Project Schedule” – May 2012

Updated: 8/1/2021