Game concept · All Under Heaven
Secretary Director
The game also links it as Grand Secretariat, Grand Secretariat's, Grand Secretariat System.
From the game's encyclopedia
The Secretary Director is a type of Diarch for Son of Heaven, helping the divine ruler to manage the Realm.
Who the Director is depends on the active Grand Secretariat Control Law. The position can be held by either the Grand Chancellor, the Grand Marshal, or the Imperial Censor.
The Director is able to start most Great Projects available to certain Ministers and Son of Heaven.
The game's text for patch 1.20.1.2. Words in blue are entries of the encyclopedia: hover one to read it, as in the game.
Secretary Director is an entry of Crusader Kings III's in-game encyclopedia (All Under Heaven). The game explains it: "The Secretary Director is a type of Diarch for Son of Heaven, helping the divine ruler to manage the Realm." It is part of Diarch. The game also links it as Grand Secretariat, Grand Secretariat's and Grand Secretariat System. Patch 1.20.1.2, from game/common/game_concepts/tgp_game_concepts.txt and game/localization/english/game_concepts_l_english.yml.
Source: game/common/game_concepts/tgp_game_concepts.txt, game/localization/english/game_concepts_l_english.yml and the English localisation, Crusader Kings III 1.20.1.2.