Navigate using a Process interface
You can easily follow the process flow from one process model to another using process interfaces in models of the EPC type.
Procedure. Procedure
Select a process model that contains an object of Process interface type to which the other process model is assigned.
Click the Steps fact sheet.
Navigate to the process interface and click it.
The Steps fact sheet of the process assigned to the process interface is shown. To navigate back to the Steps fact sheet of the previous model, click 
Back at the top left side of the fact sheet.