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You can convert a sub-process to a Reusable Sub-process, or Call Activity (in BPMN).
To transform your sub-process into a reusable sub-process follow these steps:
1. Right-click on the Sub-process to convert, choose the Sub-process type option and then click on Reusable process.
The diagram element's border will change to indicate it is now a reusable Sub-process.
If you have already diagrammed the Sub-process you will receive a message alerting to this fact. Click the Yes button to convert it and keep all the lower level diagram elements.
It is important to clarify that a reusable Sub-process calls a separately modeled process.
There are two different ways of creating a call to a reusable sub-process. The Edit Sub-process option opens an empty diagram workspace and relates it to the shape. Alternatively, you can manually relate the shape to a predefined diagram.
Let us assume that the Quotations Sub-process is reusable and has not yet been diagrammed.
To create a call for the Sub-process not yet modeled (i.e., create the detail in a new diagram), use the Edit Sub-process option by right-clicking the shape:
Click on Yes on the Dialog:
A new canvas will be opened for you to start modeling your diagram.
2. To reference an existing diagram (assuming Quotations detail was created in the previous step), relate the diagram in the Sub-process properties.
To do this, right-click on the Request Quotations reusable Sub-process element and select Properties from the display menu.
3. The Element Properties add-on window will display. On the Basic tab, in the Process drop-down list, select the predefined created Diagram.