How to create circular action buttons ?

[Kaelath]

Hi everyone

Not having found an answer despite my Google searches, I come here to ask it here

Here is my current interface, and I would like to know how to change the current action buttons that are square by round action buttons,

I would like to apply the following appearance to them

Interface\Artifacts\Artifacts-PerkRing-Final-Mask

Except that I don't know which lua code or script is applied to do it

If someone knows how to help me, I thank him or her.