Start Event not allowed inEvent Sub Process
If you create a new sub-process and indicate it is an Event sub-process before first editing the sub-process, when you do try to edit it the Start event is not available in the sub-process palette.
In order to create an Event sub-process with a non-interrupting start event I have had to do the following:
1 Add a Sub-Process to the main process
2 Edit the Sub-Process to add a Start Event
3 Return to the main process and select "Is Event Sub Process" on the Sub-Process
4 Edit the Sub-Process again
5 Change the Start Event to "Is Non-Interrupting