Shipment Process of a Hardware Retailer

In this BPMN example, we used only one pool and different lanes for the people involved in this process, which automatically means that we blank out the communication between those people: We just assume that they are communicating with each other somehow. If we had a process engine driving this process, that engine would assign user tasks and therefore be responsible for the communication between those people.

*Extracted from OMG BPMN 2.0 by Example