How To Use Multiple Screens In Xfce (Extended Desktop, Not Mirror)

In multi-monitors installs, Xfce clones/mirrors instead of expanding the desktop to the monitors. So here are two ways of getting proper multi-screen support in Xfce:

1. If you are using Xfce ≤ 4.10, installing ARandR
2. If you are using Xfce ≥ 4.11, extended desktop mode supported