An organization unit can represent a company, a system, a service, an organization, a user or a role, which is responsible for an activity. In UML, an organization unit is called a swimlane, while in the OOM, "swimlane" refers to the symbol of the organization unit.
To enable the display of organization unit swimlanes, select Organization unit swimlane checkbox on the General page, or right-click in the diagram background and select Enable Swimlane Mode.
, and select theAn organization unit can be created in an activity diagram and can contain any of the other activity diagram objects: