First and Third Person Camera Widget Button

So I’m not quite sure where to put this but, I and my friend are practicing the skills we’ll need to eventually design our own game. However, one of the things I need to work on is putting a first and third-person camera option in the settings menu I made using widgets. The problem is I don’t know how to do it, I’ve tried referencing the cameras I attached to the “Third Person Character” default character, and some other stuff and It’s really stressing me out. Help would be amazingly appreciated. Thanks a lot in advance.