If you want
to optimize your schedule it is advantageous to look to shorten activities that
are along the critical path. But what do you do if you have a project
constraint that causes your scheduling software to either display multiple
critical paths or completely obscure the true critical path?
It is
generally stated that an activity is critical if it cannot be delayed without
impacting the schedule end date. Well, there are exceptions to every rule. And
in this case the exception is that the activity may not be delayed without
affecting an activity constraint date, such as a ‘Finish On or Before’
constraint date. Here the critical activity is not causing the project end date
to slip, but an interim activity constraint date.
.....
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