You are able to constrain activities on a schedule sheet. A constraint ties a successor activity start date to a predecessor activity completion date, after observing dependencies and lags. Available constraints in Unifier are As soon as possible (ASAP) and None.
To constrain a schedule sheet activity
Before you can constrain an activity, the activity's dependencies must be set.
- Navigate to the schedule sheet where you want to constrain activities and open the sheet.
- Double-click the activity you want to constrain. The Activity form window opens.
Note: If the schedule sheet displays the Activity Constraint column, you can assign the constraint without opening the Activity form window.
- For each activity you want to constrain, select the activity constraint you want, either As soon as possible or None.
As soon as possible: If the start date of a predecessor activity changes, either pulls in or pushes out, the start date of an ASAP-constrained successor activity changes accordingly. If an ASAP-constrained activity does not have a predecessor, the schedule sheet start date determines the activity start date; unstarted ASAP-constrained successor activities align accordingly.
None: The start date of a None-constrained activity does not change if the start date of a predecessor activity changes. The schedule sheet start date does not determine the start date of None-constrained activities that do not have predecessor activities. The only in-built rule is that the start date of the None-constrained activity should not be earlier than the schedule sheet start date.
Integration: When activities are created through CSV, MPP, MPP XML, or P6, the default value will be None. Upon modification of the activity constraint type, Unifier scheduler will readjust the schedule sheet accordingly.
- Click OK to close the Activity form window and save the schedule sheet.