Right-click the BPMN Collaboration or Choreography element in the Containment tree and from the shortcut menu, select Create Element > Participant.
To create a multi-instance Participant
Right-click a created Participant in the Containment tree and select Specification from the shortcut menu. The Participant Specification window opens.
In the Participant Specification window, under the Multiplicity category in the General property group, type the Minimum property value (“2” or greater).
Info
The Minimum Multiplicity value of a MultiInstance participant propertymust be “2” or greater.
