Have Window Rule Only Apply to First Instance of Program

Hi! Migrating from Windows to Linux/KDE and enjoying the productivity boost!

In continuing with this I’m experimenting with Window Rules, but can’t seem to figure out how to do something that might be obvious.

Basically, I only want my Rule to apply to the first instance of Konsole that I run; I don’t’ want any subsequent New Konsole Windows that I open to be affected by this rule. I know I can have Window Rules apply differently for child windows, but I’m not sure if opening a new instance of Konsole (for example, by right clicking on the icon and clicking Open a New Window) applies here.

I apologize if the answer is blatantly obvious, but I’m new here and need a clue!

Thank you!