Hello,
We've been experiencing some issues with the use of multiple instance sub processes in the diagram editor, to the point where on the latest version of the plugin (BPMN2 Editor version 0.0.1.201208032210) the tab as been removed (see attached picture).
I've found an outstanding issue related to multiple instance subprocesses here...
https://issues.jboss.org/browse/JBPM-3645
...although I suspect things might have moved on since, given the missing tab.
Can you give me/us an idea of the state of this control? If this is a long way away from being fully implemented, we can find a way to work around it.
Cheers,
Jason