I am experiencing the exact same problem. It's kind of frustrating, becuase I need to start processes with timers (I miss the timer start event), catching and emitting signals, sending and receiving messages etc..
Marton, yes doesn't appear. You must interact with the plain XML, but is supported. Is veeery helpful the tests inside jbpm-bpmn2. Download it and see how to use differentes BPMN2 elements.
Thank you, I'll look into it!