Many thanks. You are answering very fast. anonymous wrote : ... of who is selected ... Where should the user be selected? anonymous wrote : ...the originally assigned actor is chosen again. Sorry, I don't understand this part. What do you mean by "originally assigned"? anonymous wrote : Regarding the last question, you have to indeed assign an individual actor when acting upon it, but leave the pooled-actors as they are. That way, you can always reassign back to the pool by making the actor-id null Sorry, but this part is also not easy to understand. So at any time I have to assign an individual actor explicitly to a task? I mean, my application is still doing what I expect by not assigning the user explicitly. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4165906#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...