Open an Enterprise BPMN collaboration diagram containing an object of the Call activity type or model one.
Click this object.
Activate the BPMN tab bar.
Click Activity > Edit. The Assigned models dialog opens if multiple diagrams of the Enterprise BPMN collaboration diagram type are assigned to the call activity. Otherwise the assigned diagram is opened directly.
Select the relevant diagram.
You can edit the diagram.
Tip
You can directly open a single assigned diagram of the Enterprise BPMN collaboration type or open the Assigned models dialog by clicking the Edit BPMN subprocess symbol.