It would be very useful to add the possibility to start workflows for participants who do not have admin privileges from the control center. A prerequisite for this would be finer-grained 'Manage Cases' privileges as described here:

http://code.google.com/p/yawl/issues/detail?id=170&colspec=ID%20Type%20…

This feature would allow using YAWL without having to write special pages to start workflows.