Microsoft Office Forums Project Duration for Part Time Resources
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#1
11-15-2012, 02:25 AM
 Kingrollo Windows XP Office 2007 Novice Join Date: Nov 2012 Posts: 4
Project Duration for Part Time Resources

Have a weird issue with project durations

Reducing Units Method
If I have a task that takes 4 days (set up using defaults) - If I reduce the persons units to that task to 50% - the duration increases to 8 days - no problem with this.

Calendar assignment method
However I have a separate calendar for PT time staff - who only work 4 hours.If I assign this task to someone using this calendar the duration does not increase (although the end date moves)

To a simple guy like me- I appear to be doing the same thing - as effectivley the hours per day are reduced from 8 to 4 in either scenario. - can anyone provide me with an explanation as to why the duration doesn't increase when I use the different calendar ?
#2
11-20-2012, 05:39 AM
 JulieS Windows 7 64bit Office 2010 32bit Expert Join Date: Dec 2011 Location: New England Posts: 1,693

Actually the math does work, but I agree - it's confusing :-)

Duration = Work/ (units * hours per day)

So, the first scenario:

8 days = 32 hours/(8 hours per day * 50%)

Second scenarion:

4 days = 32 hours/(8 hours per day * 100%)

I hope this helps.
#3
11-20-2012, 05:58 AM
 Kingrollo Windows XP Office 2007 Novice Join Date: Nov 2012 Posts: 4

Quote:
 Originally Posted by JulieS Actually the math does work, but I agree - it's confusing :-) Duration = Work/ (units * hours per day) So, the first scenario: 8 days = 32 hours/(8 hours per day * 50%) Second scenarion: 4 days = 32 hours/(8 hours per day * 100%) I hope this helps.
Thank you Julie,

But in the second scenario the person is only working 4 hours per day not 8. In my humble opinon it should revise the duration to 8 days

8d X 4h = 32 hours
#4
11-20-2012, 06:26 AM
 JulieS Windows 7 64bit Office 2010 32bit Expert Join Date: Dec 2011 Location: New England Posts: 1,693

But the definition of a day is set only once in File > Options, Schedule - hours per day.

When you work with resources with different schedules, using "duration" stops being helpful. I usually suggest people just talk Work, Start and Finish dates.
#5
11-20-2012, 06:32 AM
 Kingrollo Windows XP Office 2007 Novice Join Date: Nov 2012 Posts: 4

Quote:
 Originally Posted by JulieS But the definition of a day is set only once in File > Options, Schedule - hours per day. When you work with resources with different schedules, using "duration" stops being helpful. I usually suggest people just talk Work, Start and Finish dates.
Thank you.

That makes sense........sort of !
#6
11-20-2012, 06:44 AM
 JulieS Windows 7 64bit Office 2010 32bit Expert Join Date: Dec 2011 Location: New England Posts: 1,693

You're welcome and thanks for the feedback.

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