Thank you very much.
I completely skipped over those entry boxes.
With these entries:
I get pads 42B through 44F
So it was silly me after all.
With a bit more experimenting, I even managed to get the rows numbered 42 through 46, and the columns “F”, “G”, “H” with these settings:
Result:
I still do find the “Primary axis numbering” and “Secondary axis numbering” a bit confusing related to “Numbering Direction” Horizontal versus Vertical thing, but I expect it works as intended.