To create a swimlane, follow the steps below:
Once you have added one or more business actors to your objects repository, you can start modeling your processes.
Press the plus sign under the swimlane. A screen will ask you to add an actor from the dropdown list.
To create additional swimlanes, press the plus sign multiple times and add a different actor to each lane. You can't add the same actor to two swimlanes.
If you would like to know more on modeling in BPMN, read these articles on objects and relationships.