Participants and Lanes (BPMN)

Participants represent companies, departments, or roles and are represented in collaboration and process diagrams as swimming pools. Lanes represent sub-entities within these organizations and appear as swimlanes inside the pool. These objects can also appear in conversation diagrams as square nodes and in choreography diagrams, where they do not have a separate symbol but are displayed on the top or bottom band of the choreography task symbol.

To create a new participant, select the Organization Unit Swimlane tool and click in empty space in a collaboration diagram. A participant is created containing a single lane and an associated process, which willl contain all the events, activities, gateways, data, and flows created in the participant.
Note: In BPMN Descriptive, events, activities, gateways, data, and flows are created at the model root.
To add further lanes to a participant, click on it with the Organization Unit Swimlane tool. To create an additional participant in the diagram, click in empty space. Lanes are strongly associated with their parent pools, and cannot be dragged away from them or reused in other pools.
Note: In BPMN Descriptive, you can drag lanes from one pool to another, or into empty space to create a new pool, and a single lane can be reused and appear in multiple different pools.

Participants and lanes are based on standard BPM organization units (see Organization Units ( BPM)). Participants have the following additional property:

Property Description
Multi-instance The participant symbol represents multiple instances of the specified role.