Let me try to explain it since I'm pretty new to preparing game pages.

There is four categories in Block Tales,and these can be done with 1,2,3 or 4 players,as well as normal or hard mode (sub categories)

Two out of the four categories however CANNOT be done on hard mode or with more than one player.

Is there anyway I can make it so if they choose one of these two categories,only 1 player normal shows up?

Are you trying to say you only want certain subcategory values to appear depending on what other subcategories have been selected?

You've kinda done it backwards to what would normally be recommended. What you have as the "category" subcategory should just be the categories, then have player count as a subcategory. As for what you're trying to do, you'll want to apply the subcategory to a single category instead of all categories (you cannot apply it to multiple categories but not all, it's 1 or all unfortunately). Then create another subcategory for the other one that needs it