title: BPMN diagram about two swimlanes or one or two pools
body: <p>I have a question. suppose we wanna a BPMN diagram for transferring soccer player from team A in country A to team B in country B and to do that the federation of A should cancel the player registeration for team A and federation B should accept registeration for team B.
  my question is that if we should have two swimlane with role federation A and B or one swimlane is enough? or also we have to had two pools ?
  Please help me for this question. thanks a lot</p>