IBM Model F Repro Key Mapping?

[JCMax]

Two questions I have regarding the key mapping of the IBM Model F reproduction using QMK:

1) Is it possible to reverse the output of the top row number-special character keys when shift is pressed with the QMK software? I.E. if I pressed the key with “1” and “!” it will output “!” instead of “1”. But if I press shift+that-key it will output “1” instead of “!” ?

2) Can the “fn” key be set to toggle on/off with a press like num lock so that it doesn’t have to be held down at the same time as the second layer keys to activate them? if not will num lock be able to do that already in addition to locking/unlocking the numpad?

[Muirium]

QMK is powerful. It supports layer locks (like your 2nd request). I've played similar tricks to your 1st idea, but in TMK, using "Layer Mods" (specifically to turn Command + Esc into Command + ` on my HHKB). Seems like something QMK should be able to do.

I suggest some quality time with the QMK documentation and experimenting with the layer powers you will find there.