PMP® Exam Prep Online, PMP Tutorial 24 | Planning Process Group | PM Processes | Sequence Activities | Precedence Diagramming Method (PDM) | Leads and Lags | Project Schedule Network Diagrams | Dependency Determination | Sequence Activities is the process of identifying and documenting relationships among the project activities. The key benefit of this process is that it defines the logical sequence of work to obtain the greatest efficiency given all project constraints.