On the paladin I was buffing team and taunting the mobs.
On the Sister I was buffing team, dispelling team and healing.
On the hunter I was applying Bind shot / Darkness shot / Blood shot for frot and debuffs, and deadly shot for damage.
I've seen some people complaining about not being able to frot easily.
It's actually pretty similar to pokemon, you need to either get them to low hp or apply any kind of debuffs. Your level compared to the target also matters. If you want to frot the endgame bosses for example you might need to have the appropriate level, get them to low hp and applying the maximum amount of debuffs to have a good chance. You can also see if you have a good chance of success by the color of the target name when frotting (white/green = low, yellow = medium, red = high). Druid is really good at applying mass debuffs and frotting everyone in 2 turns.
