Many different parties can be involved with the definition of a metric.  Figure Me.05 – Metric Definition Involvement shows the part of the model that represents this involvement.<br/>A Party independent of the role they play can be involved or a role played by a party (PartyRole) can be involved.<br/>The involvementType attribute of MetricDefinitionInvolvement specifies the type of involvement, such as the source, user, owner, defining authority of the MetricDefinition.<br/>