In university we are using the ARIS Business Architect with the ARIS Education Package - Process Design & Analysis. If I am creating a schedule model I it is not possible to do anything with it. I can't add any signs or edit it in any way. Next to the name of the model there is a lock. So it is obviously protected. Concerning to my Professor the schedule model worked half year ago without any problems. Is it possible that there were made some changes on the licence for the Education Package?