Specifying subcategory (genre) for a game

I see in my snap listing details I can set category and then also a second category. But it’s not clear how to specify the game genre (arcade, board, logic etc). I see it is shown for some snaps when I open “Ubuntu Software” app and select categories: I can then choose the genre from the popup and individual games have “Games->Logic” next to category. Is this something I should do on my end or store does this automatically? I don’t see it as part of .yaml either. Please advise. Thanks.