A Council of Masters is a controlling group within a Covenant Fleet. The council typically consists of the fleet's highest-ranking individuals, including Shipmasters, the Fleet Master, and in some cases, a Lesser Prophet assigned to the fleet.
The Council of Masters is usually in charge of promotions, tactics, operations planning, and other events that are mainly associated with the Covenant military. This also means using inside spies to find out how the military is progressing in terms of its officer achievements and battle outcomes. By using espionage agents to see the real outcomes of military events, the chances of an officer writing a false report to gain a promotion are eliminated, as are the chances of poor operations planning based on fictional military outcomes. The Council of Masters also made decisions alongside the Prophets, as Zuka 'Zamamee had to have the approval of both.