Setting Task Due Dates Based on Project Due Date (Retroactively)

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I need to create a sheet/template where the due dates of tasks are based on the project's due date (i.e., I want to "back into" the project due date). I assume formulas or helper columns might be necessary to accomplish this (e.g., =Projectt_Due_Date-90, etc.), but I can't wrap my head around how to do this using dependencies. Any assistance would be greatly appreciated!

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Best Answer

  • mel_
    mel_ ✭✭
    Answer ✓
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    Hi Tony! I remember having a similar issue and when I searched around and I couldn't use dependencies for this (I forget why, sorry), but I found a different way:

    Have the helper row (the light grey in the picture below, my row #35) label the start and end date of the entire project.

    Each task will have this formula for the start date and end date: =IF(ISDATE([End Date]35), [End Date]35 - 61, "TBD")

    You change the bold number to the number of days prior to the project end date that you want each task done by. Does that work for you?


Answers

  • mel_
    mel_ ✭✭
    Answer ✓
    Options

    Hi Tony! I remember having a similar issue and when I searched around and I couldn't use dependencies for this (I forget why, sorry), but I found a different way:

    Have the helper row (the light grey in the picture below, my row #35) label the start and end date of the entire project.

    Each task will have this formula for the start date and end date: =IF(ISDATE([End Date]35), [End Date]35 - 61, "TBD")

    You change the bold number to the number of days prior to the project end date that you want each task done by. Does that work for you?


  • Tony Fronza
    Tony Fronza ✭✭✭✭
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    Thanks, Mel! I'll try this out. I was able to create small formulas for each task's start/due date to accommodate my needs for now.

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