there is a paradox in what you wrote.
on the gen there is no second gear/position to change date, it is not a modern Ap caliber of the 15400 or 15500 with their quick date set.
https://forum.replica-watch.info/forum/audemars-piguet-ap/9024665-xf-15202st-v2-first-impressions
we spoke about it here, please read what LEGEND wrote regarding the Myota of the XF 15202 and the date set up.
I believe what maxik wanted to write was that puretime mentioned a 2 spot position meaning
position 1- crown pushed in
position 2- time (hour and minute hands) adjustment
As per gen, that is correct.
I am unsure however if that was what he was trying to say.