Lead and lag time?

[Brenton Button]

I am working on Big Picture and I have a hard deadlined project release date (it has to be released on a certain date). I have 10-15 lead in tasks and 10 post release tasks. Is it possible to have the release date anchored and if the lead in items can push closer to the release date the lag time gets recalculated?

[Anna-BigPicture]

Hi @Brenton Button,

I will present an example box configuration that may help manage your case. 

You can create a basic task (visible only in BigPicture) and set its end date to your hard deadline release date. A basic task will also serve as a parent for your leads. 

Please apply the "Auto top-down" period mode to the basic task so no children will be allowed to exceed the parent end date (hard deadline). 

Please look at my image; I have 5 tasks linked in ASAP mode with 3 days of lag time each. 

In the second image, I delayed the start of the first task, which caused a delay in subsequent tasks. As a result lag time between the trailing tasks was 0 and 2 days. 

Cheers,
Anna of SoftwarePlant Support