Microsoft Office Tutorials and References
In Depth Information
For example, a resource called Books with a unit price of $12.95, assigned to a
task called Computer Training at ten units, accrues a cost of $129.50 to the
task. Another example of a material cost is anyone performing a service for a
fee where working time is not an issue. A speaker who presents at a
conference for a fee of $1,000 but whose working calendar and time are not your
concerns might be created as a material resource with a unit cost of $1,000.
An example of a cost resource is a consultant working for a set fee. The cost
might be $2,500, for example, and would not change based on the length of
the project, nor is it based on a volume of units used.
How resources affect task timing
For a fixed-unit or fixed-work task type, the addition or removal of resources
assigned to the task has an impact on the time it takes to complete the task.
In essence, the old saying that “two heads are better than one” might be
modified to “two heads are faster than one.”
Here’s an example: Suppose that one person is assigned to the Dig Ditch
task, which should take four hours of effort. Two people assigned to the
Dig Ditch task will finish the job in two hours because two hours are being
worked by each resource simultaneously, which achieves four hours of effort
in half the time.