Hi - for what it’s worth, what you’re talking about sounds like something broader that should be handled by the window manager (KWin in this case), rather than as an option specific coded into an individual application that could be run in all sorts of environments.
Is your use case to want to put new Konsole windows on a specific virtual desktop, regardless of which one you’re currently viewing? If so, that can generally be accomplished with KWin Window Rules.
If your use case is a bit more complex than that, other folks here have found some really powerful tools for manipulating window placement using KWin scripting: Targeting windows/apps to activity-desktop-screen combos in Plasma 6.x - #2 by luisbocanegra