Council Member

A Council Member is an individual appointed by the Head of a House to oversee one of the five House Areas of that House's administration.

Codex
"The head of a house has a council, on which sit the house members that are responsible for the five house areas. Being appointed to a council member position is a privilege and is expected to be for life. Council members have additional responsibilities to normal members, and they have a disproportionate impact on how well a house will perform in a particular area.

One of the council positions is expected to go to the spouse of the house's head."