I made the 100% and any% as variables and I want to use them as sub categories too, why does it say a default value needs to be set first and how do I do it? This is what it says: Use as sub-category [?] A default value needs to be set first.

go to the properties of either variable and check the "default value" box

Hit the 'Default' checkbox for one of them. That's what subcategory will be selected by default when you first load the leaderboard.

thx guys!

I was about to comment that "Any%" and "100%" are usually set as main categories instead of sub-categories. But then I saw the hierarchy of Chess.com... Never mind then.