Microsoft Office Tutorials and References
In Depth Information
Setting task constraints
Possible, or ALAP, task constraints). No fixed start or end dates are imposed by these
constraint types. Use these constraint types whenever possible.
In this example, tasks A and B are linked and task B has an ASAP constraint applied.
As the duration of task A shrinks or grows, the start date of task B is automatically
▪ Semi-flexible constraints , such as Start No Earlier Than or Start No Later Than (SNET
or SNLT), limit the rescheduling of a task within the date boundary you specify.
Here, tasks A and B are linked and task B has an SNET constraint set to Day 4 applied.
If Task A’s duration decreases, the start of Task B is unaffected. However, if Task A’s
duration extends, Project adjusts Task B’s start date automatically.
▪ Inflexible constraints , such as Must Start On (MSO), prevent the rescheduling of a
task. Use these constraint types only when absolutely necessary.
In this example, tasks A and B are linked and task B has an MSO constraint set to Day
4 applied. If task A’s duration decreases or increases, the start of task B is unaffected.