So I am working on a game called The Northern Valley which is a remastered of a bigger game called The Northern Frontier. I have seen this in a ton of games not just that

What I am talking about is stuff like this https://gyazo.com/f8d4adc4d36fbb0164fe45593f8bfc60 were there are two/three people on screen when you choose your character

Like is it a camera with GUI and scripts? Or just a script with gui

I know it is pretty long but I am not really a scripter just animator and builder.

Edit, If there is a YouTube tutorial link it to me