ETS2 dashboard - how is this done?

I’ve been trying to take a screenshot from in-game and then adding it to my second monitor. Do you think this could be a video from an in game screen? 

image:

 https://pasteboard.co/uafgk29txrcx.jpg 

or, is it possible to display a portion of the game on a second screen? 

I’ve tried having a second monitor (outside of sim hub) but my Nvidia card needs screens the same size / rotation. 

any ideas how it’s done?