Howard Brazee, Could you please describe your question in more detail? What do you mean by "favorite"?
(I'm at work at this moment, so I can't see exactly the setting). When I open my Parallels, there's a window that allows me to select my VM of choice. There's a feature here for me to pick a program I want to run. I went to help and saw that I can select it from my task bar and put it in this list. In full screen mode, I don't have a task bar visible. But since I posted this message, I tried non-full screen programs, but I can't get them to go there either.