Game concept

Participant Group

The game also links it as Participant Groups.

From the game's encyclopedia

Participant Groups within a Situation are a collection of characters that share the same effects during each Situation Phase.

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.

Participant Group is an entry of Crusader Kings III's in-game encyclopedia. The game explains it: "Participant Groups within a Situation are a collection of characters that share the same effects during each Situation Phase." It is part of Situation. It covers Movement. The game also links it as Participant Groups. Patch 1.20.1.2, from game/common/game_concepts/mpo_game_concepts.txt and game/localization/english/game_concepts_l_english.yml.

for a guide, post or blog

Source: game/common/game_concepts/mpo_game_concepts.txt, game/localization/english/game_concepts_l_english.yml and the English localisation, Crusader Kings III 1.20.1.2.