Using Duration to set predecessor task in advance of a fixed date/task
Can anyone explain how to use a predeccesor/successor relationship in the past on a schedule?
I have a fixed task 'start date' where the task sets the schedule for the sheet.
I want to have a task start -6 weeks from the 'start date' task, but dont know how to do this - when i try and edit the predeccesor, it will not let me use '-6w' in the duration column or as a 'lag time'.
Thanks for support/advice