https://forums.totalwar.org/vb/showthread.php?t=84462
PRIVY COUNCIL
Each faction have its own privy council, the symbol of the charge is the same
(shown in retinues) but the color and the name varies for every faction.
This charges are transferrable to a character to another, but there are only
one of the same type at a time, so cannot happen that you see 2 army general, or two first councillor. Like provincial titles they return available when the owner die.
In general they are six, and they are:
Faction Leader : Obviously titles given to the current faction leader
Army Councillor : Given to a general (not faction leader) that remain in a castle
without moving for 2 or more turns and the castle have a "garrison_quarters"
First Councillor: Given to a general (not faction leader) that remain in a city
without moving for 2 or more turns and the city have a "city hall"
Treasure Concllr: Given to a general (not faction leader) that remain in a city
without moving for 2 or more turns and the city have a "fairground"
Security Concllr: Given to a general (not faction leader) that remain in a city
without moving for 2 or more turns and the city have a "tavern"
Kingdom Concllor: Given to a general (not faction leader) that remain in a city
without moving for 2 or more turns and the city have reached
and build the "farms+1"
Each of these titles give the general various bonuses, depending on the role.
A Councillor can even got a provincial title