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HomeTechniques and Tips@RISK 6.x/7.x with ProjectsAuto Schedule or Manual Schedule?

11.8. Auto Schedule or Manual Schedule?

Applies to:
@RISK 6.x/7.x, Professional and Industrial Editions
@RISK for Project 4.x

If tasks in Microsoft Project are "Manually Scheduled" as opposed to "Auto Scheduled", does it make any difference? Does this impact the simulation results in any way?

Auto Schedule or Manual Schedule is an option in Project 2010 and newer; in older versions of Project it's Calculation options for Microsoft Project. Under either name, it's the same idea as Automatic or Manual Calculation in Excel.

In @RISK 6.0 and later, manually scheduled tasks are temporarily switched to auto scheduled during simulation, then reset at the end. @RISK changes them to auto scheduled, so that the start and finish dates are calculated by Project. So it makes no difference to a simulation whether tasks are set to auto or manual schedule.

In @RISK for Project 4.x, you need to set calculation to Automatic. If you have Microsoft Project 2010 with @RISK for Project 4.x, make sure that no tasks are marked as manually scheduled.

Last edited: 2015-12-24

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