As a newb auggy, how do I apply the buffs? Is it clicking in the air? or do I have to just click my party ally and trigger it?
Depends on the buff. Something like Source of Magic requires you target a healer. Your movement raid buff you just blanket cast that on everyone by pressing it. With Precience(?) you can either just press it and it will smart cast to someone nearby, but you can target someone to specify them. Ebon Might will apply to 5 people based on proximity but will put priority on who you put Prescience on.