BPMN 2.0 process - how to create a sub-process?

[Martin Lichtin]

Can't figure out how to create a sub-process.. How is it done?
I'd expect a Task/Activity with a + sign it which I could click
to extend and edit its contents (or similar).

[philchudley]

Right-click and select Advanced | Make Composite  - this creates a linked BPMN Business Process diagram and displays the + sign

You may also change the TaggedValue activityType to Sub-process

Please note that in order to create a linked BPMN process diagram, you must make the activity a composite, just setting the tagged value merely displays the +

Cheers

Phil