I know I can open a window and choose a desktop to show it on. I can also choose to show an application on all desktops. Is it possible, perhaps with a plug-in, to show an application on selected desktops?

Due to the nature of my work I have a few windows that I would really like to show up on 2 desktops out of my 8. This really is just a convenience (definitely not a necessity) but a very nice one if if there is a way.

System: openSUSE 13.2 with KDE4.