How do youtubers do it

[tyloganv9]

When i watch Youtuber's they go from their main screen into their second screen and back the opposite way they came. For example they go into their second screen by moving the mouse right but then to get back into their main screen they go right again. On my computer when i go right into my second screen to get back to my main screen i need to go left. Please help me.

 

[lucasaaron813]

If you are on windows 10 and have an nvidia graphics card:
Right click on your desktop
Select Nvidia controlpanel
On the left, locate: set up more monitors
Arrange the monitors according to your setup