How do I link to another project task as a predecessor or dependency?
ie. I have Project X and need to know when task 100 from Project Y and task 200 from Project Z will finish. If I add Project Y and Project Z under Project X, then is there a danger of being able to update Project Y or Project Z tasks (even if by accident)?
Reason I ask is that I have inherited Project X and it does not have date roll up enabled. I would have gone ahead and enabled date roll up, but feared that it would then enable rollup or Project Y & Z also.
Any help welcomed. Thanks.