This is just guessing because I think "point dance" is a term you use in Korean but not in English. I found what it means for ballet but that's most certainly not what's meant here. If you look at Yu you realize that she doesn't move too much and if she does, she comes back to one specific point. So maybe "point dance" means that you have a fixed point on the floor (so in the beginning it's best to make a mark on the floor) and you more or less stay on that one point. In the rest of the coreography (not shown here) you see that everybody moves a lot and they don't necessarliy return to their first spot. If I'm wrong and anybody has the right answer...please enlighten me too xD!