Two tasks that must run entirely parallel. In effect you want SS and FF
constraints on both T1 and T2. That's a no go.
Here is a work around. I assume T0 is a predecessor to T1, so link it that
way FS. This establishes the start of T1.
Insert a milestone T1a as FS from T1 and 0 day duration. T1a now finishes
on the same day that T1 finishes.
Make T2 a Hammock Task. The start of T2 is linked to the start of T1, the
finish of T2 is linked to the finish of T1a. Creating a Hammock Task is
covered in the FAQ#19 at
http://project.mvps.org/faqs.htm
T2 will now march with T1. Does that help?
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