in KDE, can I create a rule that makes a new window appear in the desktop of the app that created it?

This has been asked before: https://unix.stackexchange.com/q/203906/324792 , but it was for a different WM, and there are no answers. Maybe there is an answer for KDE? I am using virtual desktops to organize things. I want different desktops to be different environments that don't interfere with each other. However, when an application, in a desktop I'm not currently in, opens a new window, it will be created in my current desktop. This is usually annoying (unless I'm not doing any interactive work), and it always breaks the order I'm trying to keep. I have tried the "Special window settings" option, but it seems that there are only two general options - 1. Force a window (configurable class etc.) to always appear on a _specific_ desktop (which is not what I want) - there are details of when and how but no way to say "the window of the creating app" 2. Not forcing at all - in which case, new windows will appear on the _current_ desktop, which is what I have now. What I want, and can't find, is simply a way to make new windows appear in the same desktop as the application (window? process?) that created them. I'm using KDE 4.3.5, and I only have user privileges. The application in question is usually (but not always) Matlab.