… Imprison

is_available = OR = {
	is_designated_diarch = yes
	AND = {
		is_diarch_of_target = liege
		exists = liege
	}
}
is_landed_or_landless_administrative_or_theocratic = yes
liege ?= {
	has_diarchy_parameter = unlock_diarch_imprison_interaction
}
is_shown = scope:actor != scope:recipient
scope:recipient = {
	is_imprisoned = no
}
trigger_if = {
	limit = {
		scope:recipient = {
			is_courtier = yes
		}
	}
	NOT = {
		scope:recipient.host = {
			any_foreign_court_guest = {
				this = scope:recipient
			}
		}
	}
}
scope:actor = {
	liege ?= {
		basic_allowed_to_imprison_character_trigger = {
			CHARACTER = scope:recipient
		}
	}
	NOT = {
		basic_allowed_to_imprison_character_trigger = {
			CHARACTER = scope:recipient
		}
	}
}

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

scope:actor = {
	advanced_allowed_to_imprison_character_trigger = {
		CHARACTER = scope:recipient
	}
}
imprison_neutral_is_valid_showing_failures_only_triggers_trigger = yes
diarch_cannot_be_disabled_trigger = {
	DIARCH = scope:actor
}
custom_tooltip = {
	text = diarch_interactions.tt.you_must_be_in_a_regency_to_access
	scope:actor = {
		is_diarch = yes
	}
}
trigger_if = {
	limit = {
		scope:actor = {
			is_diarch = yes
		}
	}
	scope:actor.liege = {
		has_diarchy_active_parameter = unlock_diarch_imprison_interaction
	}
	scope:actor.liege = {
		trigger_if = {
			limit = {
				has_realm_law_flag = imprisonment_toggle_enable
			}
			has_realm_law_flag = imprisonment_toggle_on
		}
	}
}
NOT = {
	scope:actor = {
		is_at_war_with = scope:actor.liege
	}
}
scope:actor != scope:intermediary
scope:actor = {
	custom_description = {
		text = character_interactions_hostile_actions_disabled_delay
		NOT = {
			has_character_flag = flag_hostile_actions_disabled_delay
		}
	}
}

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

on_send = scope:actor = {
	add_character_flag = {
		flag = flag_hostile_actions_disabled_delay
		days = 10
	}
}
on_accept = if = {
	limit = {
		scope:hook = yes
	}
	scope:actor = {
		use_hook = scope:recipient
	}
}
scope:actor = {
	trigger_event = char_interaction.0282
}
save_scope_value_as = {
	name = use_strife_not_tyranny
	value = yes
}
diarch_imprison_general_accept_effect = yes
debug_log = debug_log.diarch_imprison.accepted
scope:actor = {
	diarch_interaction_set_or_update_global_variable_effect = {
		VARIABLE = di_track_imprison_accept
	}
	diarch_interaction_add_to_global_list_effect = {
		VARIABLE_LIST = di_track_imprison_accept_actor_list
	}
}
scope:recipient = {
	diarch_interaction_add_to_global_list_effect = {
		VARIABLE_LIST = di_track_imprison_accept_recipient_list
	}
}
scope:intermediary = {
	diarch_interaction_add_to_global_list_effect = {
		VARIABLE_LIST = di_track_imprison_accept_intermediary_list
	}
}
on_decline = scope:actor = {
	save_scope_as = use_strife_not_tyranny
	imprison_HoF_consequences_effect = yes
	imprison_tyranny_effect = yes
}
scope:recipient = {
	add_opinion = {
		target = scope:actor
		modifier = attempted_imprisonment_opinion
	}
	if = {
		limit = {
			is_landed_or_landless_administrative_or_theocratic = yes
			highest_held_title_tier >= tier_county
		}
		scope:actor = {
			trigger_event = char_interaction.0283
		}
		show_as_tooltip = {
			random_list = {
				50 = {
					show_chance = no
					desc = char_interaction.0263.result.criminal
					diarch_declare_recipient_criminal_effect = yes
				}
				50 = {
					trigger = {
						scope:actor = {
							is_landed = yes
						}
					}
					show_chance = no
					desc = char_interaction.0263.result.war
					scope:recipient = {
						start_war = {
							casus_belli = remove_regent_cb
							target = scope:actor
						}
					}
				}
			}
		}
	}
	else = {
		if = {
			limit = {
				is_councillor_of = scope:actor
				can_be_fired_from_council_trigger = {
					COURT_OWNER = scope:actor
				}
			}
			set_variable = {
				name = escaped_imprisonment_from
				value = scope:actor
				years = 20
			}
		}
		if = {
			limit = {
				is_landed_or_landless_administrative_or_theocratic = yes
			}
			depose_effect = {
				DEPOSER = scope:actor
			}
		}
		if = {
			limit = {
				is_playable_character = no
				trigger_if = {
					limit = {
						is_councillor = yes
					}
					can_be_fired_from_council_trigger = {
						COURT_OWNER = scope:recipient.liege
					}
				}
				trigger_if = {
					limit = {
						exists = scope:actor.faith.religious_head
					}
					scope:actor.faith.religious_head != scope:recipient
				}
			}
			custom_tooltip = deposed_and_become_wanderer
			select_and_move_to_pool_effect = yes
		}
		add_opinion = {
			target = scope:actor
			modifier = attempted_imprisonment_opinion
		}
	}
}
scope:actor = {
	if = {
		limit = {
			any_courtier = {
				has_relation_guardian = scope:recipient
			}
		}
		every_courtier = {
			limit = {
				has_relation_guardian = scope:recipient
			}
			save_scope_as = ward
			remove_guardian_effect = {
				GUARDIAN = scope:recipient
				WARD = scope:ward
				RETURN_WARD = yes
				HIDE_OPINION = no
			}
			add_to_list = ward_children
		}
	}
	if = {
		limit = {
			any_courtier = {
				has_relation_ward = scope:recipient
			}
		}
		random_courtier = {
			limit = {
				has_relation_ward = scope:recipient
			}
			save_scope_as = guardian
			show_as_tooltip = {
				remove_guardian_effect = {
					GUARDIAN = scope:guardian
					WARD = scope:recipient
					RETURN_WARD = yes
					HIDE_OPINION = no
				}
			}
			add_to_list = guardian_list
		}
		hidden_effect = {
			scope:guardian = {
				send_interface_message = {
					type = event_childhood_neutral
					title = remove_guardian_interaction_notification
					left_icon = scope:recipient
					right_icon = scope:guardian
					remove_guardian_effect = {
						GUARDIAN = scope:guardian
						WARD = scope:recipient
						RETURN_WARD = yes
						HIDE_OPINION = no
					}
				}
			}
		}
	}
}
scope:actor = {
	if = {
		limit = {
			scope:recipient = {
				OR = {
					is_playable_character = no
					AND = {
						is_landed_or_landless_administrative_or_theocratic = yes
						primary_title.tier = tier_barony
					}
				}
			}
		}
		trigger_event = char_interaction.0230
	}
}
if = {
	limit = {
		scope:actor = {
			has_character_flag = flag_hostile_actions_disabled_delay
		}
	}
	scope:actor = {
		remove_character_flag = flag_hostile_actions_disabled_delay
	}
}
debug_log = debug_log.diarch_imprison.rejected
scope:actor = {
	diarch_interaction_set_or_update_global_variable_effect = {
		VARIABLE = di_track_imprison_decline
	}
	diarch_interaction_add_to_global_list_effect = {
		VARIABLE_LIST = di_track_imprison_decline_actor_list
	}
}
scope:recipient = {
	diarch_interaction_add_to_global_list_effect = {
		VARIABLE_LIST = di_track_imprison_decline_recipient_list
	}
}
scope:intermediary = {
	diarch_interaction_add_to_global_list_effect = {
		VARIABLE_LIST = di_track_imprison_decline_int
# … (cut here; the rest is in the file)

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