Creating a Process Hierarchy Diagram

You can create a process hierarchy diagram in an existing BPM in any of the following ways:

Right-click the model in the Browser and select New > Process Hierarchy Diagram.
Right-click the background of any diagram and select Diagram > New Diagram > Process Hierarchy Diagram . This feature is not available in decomposed processes

To create a new BPM with a process hierarchy diagram, select File > New Model, choose to create a business process model from the Model type list, choose Process Hierarchy Diagram as the first diagram, and then click OK.