Adding and Deleting Activities

Activities may be added to represent unplanned work, reflect the actual order of completion of planned work, or refine existing long-duration activities. As with all existing activities, new activities should be given a unique description and should be mapped to the appropriate activity codes. New activities should be reviewed for completeness of predecessor and successor logic, resource assignments, and the effect on the critical path and float calculations. Inserting additional activities may be subjected to the program’s schedule change control process.

Activities should not be deleted from a baselined schedule. Deleting an activity may disrupt schedule logic and complicate efforts to compare the current schedule to the baseline. If the activity is no longer valid, its duration should be zeroed out and the activity marked as completed. If some portion of the activity has been completed, the remaining duration of the activity should be zeroed out and a record kept of the completed portion. In addition, a note should be added to the schedule to document why the activity’s duration or remaining duration was removed.