I dont have pics atm i'll try to upload some later on. But a good way to visualize it would be that you have your Two 1-2-3 Combos (Rear and Flank).

I personally arange it so that my Flank Combo (DK, TS, SP) is on the R2 shoulder trigger using Circle, Square and X. Then i'll put the Rear Combo (Boot, True, Demolish) on the exact same buttons except with L2 Being the trigger. I find this very easy on the Brain essentially allowing you to never look at your crossbar as its very easy to memorize.

Essentially your button presses never change when moving for positional attacks. The only thing that changes is the Trigger that you press.

The Directional Buttons i save for AOE Skills (AoD, Rockbreaker) and Off GC moves (Steel Peak). Triangle is reserved for my Internal Release/BfB macro.