After reading and reading..finally i understand about the targeting system for PC...too bad unable to test it before US server down.
Main point is the target filter dont work unless u assign your tab to target cycle under SYSTEM in keybind menu, not targeting.
Totally screw me over, looking for it.
But i learned about target focus, quite useful. Also the Target filter group which display as LB+Y, RB+Y etc is referring to "Set Target Filter to All", "Set Target Filter to Enemy".
The 4 set of filter refer to this 4 set of filter. If u change the "Set Target to All" filter to "Custom" filter, it still button you assign still pointing to it.
Also, the button for "Set target to target of the target" meaning if target a monster, you can cycle between your Target and the "Target" of your target. If your target is monster and aiming at your party member, you will cycle between the monster and party member. Although hard to find any usage for this.
yo dawg, i heard you like Target, let's put Target in your Target, so you can Target while you Target!