(Newb Question) How to lose focus when emulation starts?

[JustDropppingBy]

Whenever the emulation of a game starts, suddenly the menu/window can not be clicked anymore.

Where is the option to allow losing window focus?

For the plugins, how different is 2xsal from sharpen more?

 

[tailslol]

witch plugin are you using and what is your spec (cpu,video card )