Tips for tanking with a controller?

[JMadFour]

Best controller tips i can give are:

Also, change R3 to Assist in controller configuration.
Then can target a mob, click R3 and target the player it is targeting.
Also can select a party member, click R3 and it will target the mob that player is targeting.
(These are also useful for healers/DPS).

How do I do this?

I cant seem to change anything in the controller keybinds..

Edit: nevermind i was in the wrong menu.