Hi Jackie,
When in doubt, I suggest staying with the default task type in Project
which is fixed units.
The advantage that fixed units offers over the other two options (fixed
work and fixed duration) is that the idea of changing duration (how long
does it take) based upon how much work (effort) seems most comfortable
to people.
The disadvantage (in my opinion) of fixed work or fixed duration is the
possibility of overallocation of resources due to a single task. (For
example, a fixed work task, drop the duration and Project will increase
resource assignment units.) When a resource becomes overallocated on a
single task (you have increased resource assignment units above the
resource's max. units on a *single* task), resource leveling cannot
assist in resolving the issue.
Again, I think all three task types have their place. I will use Fixed
Duration task type when I want Project to calculate resource need and I
know work estimates. I will use fixed work if I am relatively confident
of effort requirements, but am told that I cannot have as many resources
as I planned and I want Project to adjust the duration based upon new
resource availability.
I know you are relatively new to MS Project and I would strongly suggest
taking a two to 3 day class in MS Project that focused not only on the
"how do you" but also the "why should you." Make sure you are taking
the class from an instructor who can provide both
I hope this helps. Let us know if you haved any further questions --
we're happy to help.
Julie
Project MVP
Visit
http://project.mvps.org/ for the FAQs and additional information
about Microsoft Project