[KDE] Keyboard Shortcut to Tile Windows?

I would like to set meta+ various keys to tile windows to the either half, or one of the corners.

I have looked through the kwin keyboard shortcuts in “Shortcuts and Gestures” and tried setting this in a couple of different places where the keyboard shortcut label seemed to be the correct one, but it hasn’t worked. So clearly I’m setting this in the wrong place.

I’ve tried “Quick Tile Windows to the…” - which sounds like what I want, but that’s apparently not it.

Can anyone point me in the right direction? Thanks!