How make animated graphic to use in real-time on Virtual Studio?

Hi, im new in here and, few days im started in Unreal Engine to create a virtual studio for broadcast. But, have something I cant find for study. How made this virtual graphic input insert and triggered?

I saw a lot of external software that does this on Unreal Engine, but I wanted to do that on the Unreal Engine itself.
If anyone can give me a direction to learn how to do this, I will be grateful!