The leader of an Order is its Master, the Master’s deputies are called Regents, officers are Commanders, the core body of warriors are Knights, and new members are automatically assigned the status of Squire.
The leader of an Order (it's Master) can: change the coat-of-arms, name, tag, Order description, leave messages to all members of the Order, promote/demote members in rank, accept and expel players from the Order.
Regents have the right to accept into the Order and expel any players who are lower in rank than them, as well as demote players of ranks lower than Regent or promote to ranks lower than Regent. They can leave a message to the entire Order (which every member can see in the Order info window).
Commanders can expel other Order members of lower ranks, accept players into the Order and promote Squires to Knights.
Squires and Knights currently don’t have any privileges.