Game concept
Councillor Task
The game also links it as Councillor Tasks.
From the game's encyclopedia
Councillor Tasks are important jobs that can be given to your Councillors. These tasks can either be general or specifically target a County or Court.
If you have a Special Relation with a Councillor, Tasks with a completion time may take more or less time.
Note that councillors are not physically present to perform these tasks, but merely lead the efforts.
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.
Councillor Task is an entry of Crusader Kings III's in-game encyclopedia. The game explains it: "Councillor Tasks are important jobs that can be given to your Councillors." It covers Possible Side Effects, Find Secrets, Disrupt Schemes, Increase Control in County, Fabricate Claim on County and 13 more. The game also links it as Councillor Tasks. Patch 1.20.1.2, from game/common/game_concepts/00_game_concepts.txt and game/localization/english/game_concepts_l_english.yml.
Source: game/common/game_concepts/00_game_concepts.txt, game/localization/english/game_concepts_l_english.yml and the English localisation, Crusader Kings III 1.20.1.2.