Multiple lanes in pool

Hi @maple,

the boxes in the left part of the lane indicate a lane set. You can have lanesets nested within each other. Something like this:
Screenshot_20211216_212133.

Also see the respective BPMN XML:

    <bpmn:laneSet id="LaneSet_0a3f5ju">
      <bpmn:lane id="Lane_020s3j1" name="Department A">
        <bpmn:childLaneSet id="LaneSet_14trla8">
          <bpmn:lane id="Lane_1e7l5fs" name="Team 2" />
          <bpmn:lane id="Lane_0g3wizy" name="Team 1" />
        </bpmn:childLaneSet>
      </bpmn:lane>
      <bpmn:lane id="Lane_0i8u052" name="Department B" />
    </bpmn:laneSet>

This means the screenshot you showed shows a Department 1 (which is a lane set) which has an empty lane inside.

Does this help?

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