Here is another. This worked very well I was in a group of 2 wizards (I was
one), 1 cleric, and 1 druid. The druid had enough hp to tank so they did so
with the cleric healing them. The druid would also cast offensive spells
while tanking and of course myself and the other wizard would blast. We
ALWAYS used ASSIST so that we all focused on 1 at a time. Using this
tactic, we could take on several mobs conning red to me (I was the lowest
level in the group) at once. ASSIST is by far the key in this setup, which
is what you will pretty much always use if both a tank and cleric are in
your group. If you don't have BOTH a cleric and tank, you will probably end
up having to root and blast at some point unless you arent fighting very
hard monsters.

-Solric