Minimal Spoilers - Avoiding the megas lockout?
I'm trying to play through the game relatively blind, but this is making me a bit paranoid about one of the things I *do* know is in the game - I know that there's a point where, if you haven't done enough sidequests, you get locked out of megas (and ultimates?) until the endgame/postgame. This is making me wonder, how obvious do they make it when you're approaching that point? Is it easy to miss some of the sidequests without a guide?
Unrelated second question, but I must be missing something obvious; why can't I place items on the DigiFarm? The "place items" option is only letting me move and/or remove the objects already there.
Edit: I'm playing on Switch 1, if that matters at all.