TO keep it simple.
I have a hard end date - a milestone. Lets call it 1/1 2016. for the sake of argument lets say I have just one task that needs to be done. That task takes 10 days and must be fininshed 20 days before launch date. But the launch may be postponed up to 1 year depending on other factors and so theres a need to not start working on tasks until we absolutely need to.
Therefore, I would like project to show the schedule for when the task needs to begin/end according to the launch date - and update those dates if I change the launch date.
launch date 1/1/1016
task 1 start date end date predecessor:1ff-20
This looks good at first. But when I move the launch date, Task 1 DOES NOT MOVE WITH IT.
And that's my problem.
Seems Project only tells me how fast I can get this done and NOT how late I can start.
Any help is appreciated:)