Unable to choose sub-categories to be shown up in megamenu - Claue 2

I was able to choose which sub-cates to be shown in megamenu 

But now, I dont that ability anymore

Answer: I will explain a little bit, what you reported is one of the differences between Claue 1 and 2. In Claue 1, indeed you were able to choose which sub-cates to show up, but in Claue 2, our managers dont allow that functionality any more. I'm sorry if you feel inconvenient