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# Scenario 1: Unmet demand calculation when forecast demands and assignments use the same calendar

In the following example, Project A requires two senior Java engineers for four months from October 15 through January 16 in US pool. Staffing requirements are two FTEs for October through November, tapering off to one FTE for December, and 1/2 FTE for January.

William Klein and Joseph Bank both are senior java engineers in US pool who have 100% of their time allocated to Project A. William plans to take two weeks of vacation in November.

Figure B-1. Allocation Detail for Project A in FTEs View shows the allocation detail for project A in FTEs view.

Figure B-1. Allocation Detail for Project A in FTEs View

Figure B-2. Allocation Detail for Project A in Hours View shows the allocation detail for project A in Hours View

Figure B-2. Allocation Detail for Project A in Hours View

Table B-3. Example Unmet Demand Calculations for Project A lists the forecasts, assignments, and unmet demand calculations in different effort types.

Table B-3. Example Unmet Demand Calculations for Project A
| Oct. 11 | Nov. 11 | Dec. 11 | Jan. 12
--- | --- | --- | --- | ---
FTE | Hours | FTE | Hours | FTE | Hours | FTE | Hours
Forecast: Senior Java Engineer | 2.00 | 8*21*2=336.0 | 2.00 | 8*21*2=336.0 | 1.00 | 8*21*1=168.0 | 0.50 | 8*21*.5=84.0
Joseph Bank | 1.00 | 8*21*1=168.0 | 1.00 | 8*21*1=168.0 | 1.00 | 8*21*1=168.0 | 0.50 | 8*21*.5=84.0
William Klein | 1.00 | 8*21*1=168.0 | 1*(21-11)/21=0.52a | 8*(21-11)*1=88.0 | 0.00 | 0.0 | 0.00 | 0.0
Unmet Demand | 0.00 | 0.0 | 1.00-0.52=0.48 | 336.0-168.0-88.0=80.0 | 0.00 | 0.0 | 0.00 | 0.0
a. William's assignment (FTE) = 1 FTE * (working days in his resource calendar US - his personal leavings)/ working days in his resource calendar

Note: Forecast Hours is calculated based on position resource pool associated region calendar. In this example, the position relevant resource pool calendar is US.

Forecast (Hours) = working hrs per day in position calendar * working days per month in position calendar * number of FTE

Note: Assignment Hours is calculated based on the assigned resource associated calendar and his/her personal working day setting. In this example, William Klein is inheriting US calendar and takes two-week leave in Nov.

Assignment (FTE) = (working days in resource calendar - resource personal leaving days)/ working days in resource calendar * 1 FTE

Assignment (Hours) = working hrs per day in US * (working days per month in US - resource personal Leaving Days) * 1 FTE

Unmet Demand = Forecast - Assignment

Note: The calculation logic for different period types (Years, Quarters, Months, Weeks) are the same, it is just a data aggregation from different dimensions.

https://admhelp.microfocus.com PPM 8942
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