How do I point out something by using roblox GUIs like this?

Hello, so I am currently trying to learn on how to design GUIs, and I was wondering how am I able to make something like this https://gyazo.com/16370634a6d3cfe43f6ea5ac5a974bbc ?
Game link that I was in: https://www.roblox.com/games/1012555741/Nuclear-Plant-Tycoon
Is there any way to like point something out on the screen just like on that gif? Thanks.

I guess you just use a GUI image with an hole in it, no other ways.