How are Role Replace calculations such as Remaining Allocation and Availability Determined in CA PPM?

Document ID : KB000107039
Last Modified Date : 18/07/2018
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Question:
How are Role Replace calculations such as Remaining Allocation and Availability Determined in CA PPM?
Answer:
Remaining Allocation:
Role allocation (Defaults to Hours or availability per day Xs # of days) - Resource Availability (hours per day) X # of days 

Example:
Using the example of a role available 8 hours per day and the resource available 7.5 hours per day (that the role is being replaced with), the calculation would be as follows:
(8 X 5 = 40) – (7.5 X 5 – 37.5) = 2.5 

Availability Match: 
The number of hours the user is available to work during the period divided by the Availability of the role assigned to the project * 100 
So, in the example above it would be (37.5 / 40) * 100 = 93.75% 
Additional Information:

Reference KB000008639 - After replacing a Resource with a Role, the Role still has allocation on a project