How do I program the function keys in Manjaro xfce? – XFCE

I suspect this is an easy one, a ‘stupid question’ if you will, but I’m a new to Manjaro, and Linux in general, so help a noob out, alright?

How do I program the function keys to do the following functions, preferably without having to simultaneously press the Ctrl or Alt keys?

F10 Increase Volume
F9 Decrease Volume
F8 Mute
F7 Increase Brightness
F6 Decrease Brightness
F5 Screenshot
F4 Fullscreen
F3 Turn WiFi on/off
F2 Go forward
F1 Go back

Noob-friendly step-by-step instructions would be ideal, but any help on this matter would be greatly appreciated.