Hi,
my question is that I have attached a camera to an actor who is also moving in the game, is it possible that during game play I can see his view in a small side screen? See image below of what I am trying to do. Thanks
It looks like what you’re trying to do is essentially render a texture to a material, then render that somewhere in game. A wonderfully straightforward (and short!) tutorial for that can be found at the following: Unreal Engine 4 Tutorial - Basic Camera Feed - YouTube
From there, it’s pretty easy to render this in UMG, for example by following the official tutorials on the subject.