Returning to the original topic:
Any palette can be reduced to very small size.
But the little, square, gray button of the global macro palette,appears to be fixed size.
A palette could have several icon/buttons, similar size as tool bar (top right).
Earlier today, on a different thread here, I explained exactly how to do that.
A link is below.
Does that solve this resize question?
If yes, please click below to indicate on the forum that the problem is solved.
Here's the link to re-size instructions:
https://forum.keyboardmaestro.com/t/request-make-km-master-palette-icon-smaller/5651/9?u=mark