Test Package - Assignment to different tester

hi to everybody,

I'm using STWB_2 and STWB_WORK during test in an implementation project. I have created a test case with different process steps. Some of these steps are to be executed by a key user, other by another key user. How can I assign the different tester inside the test package. I would like to show this information when the testers display the package. Any idea????

Thanks a lot

lelio