How do you enable expanded controls L2+R2 R2+L2

I was just made aware of this in the DPS forums but I cant find where tio enable it.

Character Configuration -> Hotbars -> Cross -> Expanded Hold Controls
Check the Enable box, and select which hotbars you want it to show.

http://i.imgur.com/zxMZdIK.png

You can assign half of a hotbar to L2+R2, and half of a hotbar to R2+L2. They can either be the two sides of one hotbar, or if you want one to be universal and the other class/job specific, you can assign half of each of two hotbars. (On the "Sharing" tab you can specify which hotbars are class/job specific and which shared between all classes/jobs.) Or, if you want the same skills regardless of which of the two buttons are pressed first, you can assign them to the same half of the same hotbar.

Thank you kindly

Omg what a world of difference. I think this might be better than KB&M