You are confusing work and duration. As Jan points out, the 'duration' of
the task is the time between its start date and its finish date. If the
duration changes it means that either the start or finish date (or both)
HAVE changed and it can't be otherwise. Work, OTOH, is the effort done by
the resource expressed in man-hours. If the task starts Monday at 8am and
finishes Friday at 5pm, with the default calendar its duration is 40 hours.
If you change the duration to some other value, at least one of the dates
MUST change. If the resource is working on that task 100% he's doing 40
man-hours of work. If you change his allocation to 50%, he's now doing 20
man-hours of work during that 40 hours of duration but the duration itself
HAS NOT changed.
--
Steve House [Project MVP]
MS Project Trainer & Consultant
Visit
http://project.mvps.org/faqs.htm for the FAQs
Nikou said:
I am not supposed to change the start and finish date for a task. I can
only
change the duration of the task and resource allocation. Now how can I
change
the schedule if a task is late?