How do you script a nametag that shows below someone's username in game if they are in a group?

I did not try anything I just wanted to know where I would go to do so and what I would code and everything needed to do so.

FYI:

https://developer.roblox.com/en-us/api-reference/function/Player/IsInGroup https://developer.roblox.com/en-us/api-reference/function/Player/GetRoleInGroup

After that you should be able to code it