I'm unable to get "Desktop Left" and "Desktop Right" to work when assigned to mouse or keyboard via Options+. Nothing happens when assigned to mouse or FKey.

The only way I can get this functionality is to set keyboard to FKeys mode, then use Apple System Preferences > Keyboard > Shortcuts > Mission Control > Move Left/Right a space. This is my favourite productivity enhancer. The ability to rapidly switch between spaces is MASSIVE!

I am assuming that Desktop Left/Right is meant to provide equivalent functionality but maybe I am mistaken...