I'm having trouble figuring out how to achieve this effect, i'm hoping someone could point me in the right direction.
https://gyazo.com/111471b584d82cc384422c22d3c9894d
"it opens sub categories and moves everything below the category you clicked downward." My answer is a video https://www.youtube.com/watch?v=V_eqogNIYEg.
Check out roblox wiki article about animating user interface GUI Animations