How to put a 3D object on a UI

Hello. I’m very new to Unity and I’m trying to replicate the following action select options for my UI
159308-capture.png

(This is from the game Shadow Hearts just to mention)

To me, it looks like the blue arrow is a 3D object that spins over time. It also has a glow around the arrow. I really quite like this effect.

I have created a 3D arrow and have made it a child of one of my buttons. The angle that it appears on my scene view doesn’t seem to line up with my game view so I think that this method is probably wrong.

Is this the correct way to put a 3D object on a UI?

Many Thanks

Right click on it from the hierarchy, go to 3D object, and insert in the object you want. If it’s an object you have already made and are trying to put it in, drag it from your hierarchy and place it in the UI.