I'm a first time user of soapui and I'm trying to run a loadtest to ramp-up users/threads over  20 minutes until it reachs the expect total users/threads and then maintain a steady load over a specific period of time.  The loadtest is pretty simple where I'm sending a web service request and then receive a response. I want to see how my web services server application handles increase in load and then level off.

Can someone share with me the technique for setting up soapui's loadtest to do as I've described? It seems that "Simple" and "Thread" strategies do not seem to give me what I want.