Each moderated forum has it's own "Section Moderator" . As it stands at the moment:
Convert Issues Moderator: Thomas
Faith Issues Moderator: PeterTheAleut
Liturgy Moderator: arimethea
Oriental Orthodox Discussion Moderator: Salpy
Orthodox-Catholic Discussion Moderator: dantxny
Orthodox Family Forum Moderator: TBA
Free-For-All Moderator: Αριστοκλής
Then there are two "Global Moderators" myself and cleveland.
The Global moderators oversee the Section Moderators as well as moderate the forums which have no moderators (such as "Other", "News" etc). The private boards are unmoderated (unless something is posted in them which is illegal etc).
Finally, the "Administrators" oversee everything and make the final decisions. They are FrChris, Robert and Anastasios.
There are also other people who assist with content development and are involved in moderator/admin discussions.
In practice, the moderators and admins work together and discuss issues. Also, if a section moderator sees some gross breech of forum rules in a forum which is not normally their responsibility, they are able to intervene.