I can't seem to configure double-finger or triple-finger clicks on the XFCE edition like I could so eaily on the Gnome edition through an easy-to-use GUI. I can use double-finger scroll though. My only option is using bottom left as left click, bottom middle as middle click and bottom right as right click..
I've tried installing xf86-input-synaptics and editing the X11 config file as per synaptics usage page, but that caused my system to hang where I had to TTY2 and delete the file and remove synaptics (then my system was back to normal).
XFCE is great! But I feel they've missed the boat on some user-friendly setting options.