today I’m going to show you what happens when you establish dependencies between manually scheduled Tasks in MS PROJECT 2016, and then change Duration.
First I’m going create simple Project:
Now I’m going to put Duration for each Task:
Now I will connect them:
Everything looks Perfect. But, suppose that for some reasons Task 1 now has 2 days Duration, and Task 2 has 4 days duration. I will get:
As you can see Task 2 did not move it’s Start Date, and Task 3 did not move it’s Start and Finish date. Why? Because Tasks are Manually Scheduled. Once you change anything, the rest is your concern (like dependencies). If you want MS PROJECT to handle this for you, use Auto Scheduled Tasks. If you still want to “fix” this “issue” you can do it like this:
and you will get:
and if you do the same for the Task 3, you will get what you want:
Remember this: If you use manually scheduled tasks, you are in charge for any change on them!