Scenario 3: Unmet Demand Calculation when Assigned Resources are Partially Allocated

In the following example, Project C requires senior java engineers for four months from October 2011 through January 2012 from US Pool. Staffing requirements are three FTEs for October 2011 through November 2011, tapering off to one FTE for December 2011, and 1/2 FTE for January 2012.

Barbara Getty is a senior java engineer who has 75% of her time allocated from October 2011 through January 2012 to Project C. She is not planning to take any vacation during that time.

Figure B-5. Allocation Detail for Project C in FTEs View shows the allocation detail for Project C in FTEs view.

Figure B-5. Allocation Detail for Project C in FTEs View

Figure B-6. Allocation Detail for Project C in Hours View shows the allocation detail for Project C in hours view.

Figure B-6. Allocation Detail for Project C in Hours View

Table B-5. Example Unmet Demand Calculations for Project C lists the forecasts, assignments, and unmet demand calculations for Project C in FTEs and hours views.

Table B-5. Example Unmet Demand Calculations for Project C

	Oct. 2011		Nov. 2011		Dec. 2011		Jan. 2012
	FTEs	Hours	FTEs	Hours	FTEs	Hours	FTEs	Hours
Forecast: Senior Java Engineer	3.00	8*21*3=504.0	3.00	8*21*3=504.0	1.00	8*22*1=176.0	0.50	8*21*.5=84.0
Barbara Getty	0.75	8*21*.75=126.0	0.75	8*21*.75=126.0	0.75	8*22*.75=132.0	0.75	8*21*.75=126.0
Unmet Demand	2.25	504.0-126.0=378.0	1.00-0.52=0.48	504.0-126.0=378.0	0.25	176.0-132.0=44.0	(0.25)	(42.0)

Assignment hours = working hours per day in resource calendar * (working days per month in resource calendar - personal leaving days) * percentage of allocation