Game concept
Appointment Level
The game also links it as Appointment Levels.
From the game's encyclopedia
An Appointment Level is used by some Appointment Succession Laws as a requirement for Characters to become eligible candidates.
Levels are based on the level of a specific currency and each law can use a different currency as a requirement. A higher tier Title will typically require a higher level.
For example: Celestial Appointment Succession requires Merit - A Duchy requires a Merit Rank of 7th rank or above, while a Kingdom requires 5th rank or above.
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.
Appointment Level is an entry of Crusader Kings III's in-game encyclopedia. The game explains it: "An Appointment Level is used by some Appointment Succession Laws as a requirement for Characters to become eligible candidates." It is part of Appointment Succession Law. The game also links it as Appointment Levels. Patch 1.20.1.2, from game/common/game_concepts/07_ep3_game_concepts.txt and game/localization/english/game_concepts_l_english.yml.
Source: game/common/game_concepts/07_ep3_game_concepts.txt, game/localization/english/game_concepts_l_english.yml and the English localisation, Crusader Kings III 1.20.1.2.