Create a new complex data type PairedCodeValueType that extends CodeValueType by adding a property

Name: extentOfApplication
cardinality: 0..1
Datatype: CodeValueType
Description: A term or value from a controlled vocabulary that describes the extent to which the parent term applies for the specific case. For example, when used to assign a role to an actor within a specific activity this term would express the degree of contribution. Contributor with Role=Editor and extentOfApplication=Lead.

Usage: In AgentAssociation change the datatype of the property role to PairedCodeValueType