Chapter 6 doesn't give me a clear enough idea for developing Human Tasks. It's not clear to me when to use what. I will define the process before the application is coded. I want to do this in 2 or 3 stages. First how do I define a process with Human Tasks when I am only testing the process in Eclipse? Second, how do I add a temporary UI for Human Tasks like you have in the demo? Third how do I then integrate with the webapp when it's ready? The webapp will be GWT but I plan to call jBPM from the server instead of making REST calls from the client.