http://forum.square-enix.com/ffxiv/t...PS4-controller

This thread should help, just ignore the parts about <me> and stuff. If you press the button, it'll put the actions where you tell it to. As for PC controls idk which hotbars are called what. but it would look like this

"/hotbar Action "Fell Cleave" 1 7
/hotbar Action "Decimate" 2 7"