How can I mirror one desktop but not the other one

[Evil Joker]

Hi guys Windows 10 User here, so I am using one gaming monitor and one HDTV My question is Can I mirror one desktop so My brohter can watch a movie and the audio on that particular desktop is just tru HDMI to the TV Speakers, while I am gaming on the other one with headphones?

 

[Cazauxx]

That will be called a dual monitor setup
http://www.dell.com/support/article/us/en/19/SLN128740/EN

http://www.wikihow.com/Set-Up-Dual-Monitors

 

[Evil Joker]

I know that, my question is since w10 supports multiple desktops can I use a mirrowed desktop use it normally, set the audio tru hdmi and then switch back to my desktop where I can set the audio tru headphones. That way my brother can watch movies with the tv speakers while i am gaming

 

[James Mason]

Maybe.

Use an extended desktop.

Set your headset as the default audio device.

Set you video player's audio device to the tv speakers.

The multiple desktops thing in W10 isn't, uhh, what it sounds like, i guess. It's only to make it easier to keep your "work" separate, but I haven't seen a way to actually use it for anything useful yet.