Force to Join Faction

is_available = is_a_faction_member = yes
trigger_if = {
	limit = {
		is_ai = yes
	}
	top_liege != this
	is_forced_into_faction = no
}
is_shown = scope:actor = {
	liege ?= scope:recipient.liege
	NOR = {
		joined_faction ?= scope:recipient.joined_faction
		scope:recipient = scope:actor.liege
	}
}

As written in game/common/character_interactions/00_faction_interactions.txt.

scope:actor = {
	trigger_if = {
		limit = {
			government_has_mechanic = administrative
		}
		custom_tooltip = {
			text = force_join_faction_admin_requirement_desc
			OR = {
				has_strong_usable_hook = scope:recipient
				AND = {
					influence >= {
						value = scope:actor.monumental_influence_value
						multiply = 2
					}
					scope:recipient ?= {
						NOT = {
							opinion = {
								target = scope:actor
								value <= -50
							}
						}
						NOT = {
							opinion = {
								target = scope:recipient.liege
								value >= 50
							}
						}
					}
				}
			}
		}
	}
	trigger_else = {
		has_strong_usable_hook = scope:recipient
	}
	NOT = {
		is_at_war_with = scope:recipient
	}
}
scope:recipient = {
	trigger_if = {
		limit = {
			is_a_faction_member = yes
		}
		joined_faction.faction_leader ?= {
			is_ai = yes
		}
	}
	is_forced_into_faction = no
	can_join_faction = scope:actor.joined_faction
}
custom_description = {
	text = barons_joining_independence_factions
	NAND = {
		scope:actor.joined_faction = {
			faction_is_type = independence_faction
		}
		scope:recipient.highest_held_title_tier = tier_barony
	}
}

As written in game/common/character_interactions/00_faction_interactions.txt.

on_accept = scope:actor = {
	send_interface_message = {
		type = event_faction_neutral
		title = force_join_faction_interaction_notification
		right_icon = scope:recipient
		if = {
			limit = {
				scope:hook = yes
			}
			use_hook = scope:recipient
		}
		else_if = {
			limit = {
				scope:influence = yes
			}
			change_influence = {
				value = monumental_influence_value
				multiply = -2
			}
		}
		scope:recipient = {
			join_faction_forced = {
				faction = scope:actor.joined_faction
				forced_by = scope:actor
				years = 10
			}
		}
	}
}
add_clan_unity_interaction_effect = {
	CHARACTER = scope:actor
	TARGET = scope:recipient
	VALUE = medium_unity_loss
	DESC = clan_unity_forced_faction_joinage.desc
	REVERSE_NON_HOUSE_TARGET = no
}

As written in game/common/character_interactions/00_faction_interactions.txt.