Thanks Ronald. In process definition we can mention duedate, this information can be used to run the simulation. But there is seperate file created to put simulation factors for the process. I agree GPD plays no role in this and in docs also no where mentioned it does. I might be wrong about this but one factor is missing in the simulation is that we can configure probablity, distribution, number of people and so on but not "Number of process instances running simultaneously" factor. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4231764#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...