Specifies for how long the resource (human or other) participates in the processing (Operation, Procedure, etc.).

100% means that the resource is enlisted during the whole processing.

If a percentage less than 100% is given, the resource will be freed before the end of processing.

0% means that the resource does not participate (e.g. a consulted Org-Unit in an Operation). The resource is not allocated and processing can start even if the resource is not available.

Example: for a 10mn duration and an involvement of 60%, the resource is freed after 6mn.