like Ui anchor points
I want to change block , wedges, cylinders, Spheres anchor points,
is there a possible any way I can do this?
It is the Pivot Point, there is a button in studio to edit this location.
I tried it, it didn’t work 
What does a pivot point even do.
Yezzzirrr there is indeed a Anchor Point / Origin. It’s called the Pivot Point in Roblox Studio, but it functions very similarly to the Origin in 3D software such as Blender. You can chose a spot you want your Pivot Point to be at, and whenever you to to rotate / transform your object, it will transform relative to the Pivot Point.
Here’s the documentation G
https://developer.roblox.com/en-us/resources/studio/Pivot-Tools
Yeah but when I tween size this is the output:
I want it to be like a loading bar, only scales one way(up Only) , not both ways(up and down)
You would have to tween the position too
I tried that, I found out that it is welded to the Basepart which mean the tween would cancel.