How to have a mini camera of my scene

Hi, i want to know if is possible to have a cloned reduced view of my main camera in another camera positioned in a small box in left bottom corner of my scene.
How could i clone the main camera view in a smaller camera on the stage?

Thanks in advance for the help

I think you will find this video usefull.
In short :

  1. Set render texture output of the main camera.
  2. Use that texture to display graphics on a screen area of your choice.

Thanks a lot!
This is exactly the tutorial that i needed