"PROGRAMMING KEYS" Microsoft Ergonomic Keyboard 4000 / Mac Mini OS X 10.9.5 I used to have my up and down arrow keys in the Microsoft keyboard programmed to "send backward" or "bring forward" when using InDesign on my Mac. Somehow I set it back to default settings (so they now move things up and down). How can I reprogram them? I checked the Apple menu>system preferences>keyboard and didn't see those keys listed. I also tried apple menu>system preferences>microsoft keyboard. I assume it can be done here but I can't figure out how. Can someone please explain to me in detail? BTW I'm not great with computers or computer lingo so be very detailed and speak in layman's terms. Thanks!
Try https://pqrs.org/osx/karabiner/


  A powerful and stable keyboard customizer for macOS.