How do I change the order in which fields appear within a category?

I'm looking everywhere and I can't seem to find an answer. The way my fields are organized right now doesn't flow well, and I'd like to be able to click and drag to reorder.

Personally, i ended up deleting some fields in the category, then remade them the order i needed them to be. U gotta be careful tho U need to save everything you've written so far before u do this or u might lose it