I have been tasked to use Microsoft project in a group assignment to help manage it, but I'm having trouble getting the durations and dates to not auto update.

I basically would like to have the whole week to be able to enter start and finish dates as well as the duration to show the exact time between them. I have changed the calendar work week to 24/7 for the project as well as for all the people in my group but still get the duration changing start and finish dates.

Any help is appreciated.


2 Answers 2


You will not get Project not to update the dates based on task duration. For each task, the end date is calculated as the result of the start date + the duration (non-working days are ignored).

Why exactly do you need independant values for date and duration? Are you maybe trying to enter man-days as duration (So if three people work all day, that would make 3 days total)? If yes, then the column "Work" is the one you want.

  • sorry im probably not explaining it properly. I would just like the start date and duration to dictate the end date and the settings required to allow all days and all hours to work so a day duration doesn't have a difference of two days in the start and finish date Jan 9, 2018 at 21:26

I'm not sure what do you need. Could you add some more detail to your request?

So far, I can think about some options:

  • Disable automatic calculation in MS Project Options configuration, and then press F9 every time you need to recalculate.
  • Use Manual tasks, not automatic (MS Project 2010 and newer).
  • Use elapsed durations (adding an 'e' before the time unit, e.g. "2 edays"), this consider duration without calendar restrictions.

But please clarify exactly what do you need.


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