I dont understand this last part.

Also, the point of having three moderators is so that there is always at least two people there to moderate at any time, and if not that, always one.

And, the leaders make the decisions, the co-leader is just a back-up mod.

In my suggestion.

As in the job of a co-leader is usually to organise things and make sure things don't fuck up if the leader/s are absent. I think the position is kind of pointless, as the regular members should be doing these things anyway.