Not working shaders

Hello. Forgive me please I’m new. I can’t enable shaders. Hot keys m/n not working. I tried enable shaders in libretro settings but I have only filtres menu. I don’t have shaders menu. What I done wrong? Thank you

Win10 x64, geforce 580, latest driver.

The shader menu is in the quick menu. Load up a game and go back into the menu and ‘shader options’ will be at the bottom.

Thank you. But I don’t know how to do this? There is hot key for quick menu?

Default hotkey for the menu is F1. Once you get into the shader menu, use ‘load shader preset’.