Shift Privileges

is_available = trigger_if = {
	limit = {
		is_ai = yes
	}
	is_diarch = yes
	diarch_loyalty < diarch_loyalty_visibly_loyal_threshold
}
liege ?= {
	has_diarchy_parameter = unlock_shift_privileges_interaction
}
OR = {
	is_designated_diarch = yes
	AND = {
		is_diarch_of_target = liege
		exists = liege
	}
}
is_shown = scope:actor != scope:recipient
scope:recipient = {
	liege ?= scope:actor.liege
	this != scope:actor.liege
	is_landed_or_landless_administrative_or_theocratic = yes
	scope:recipient.highest_held_title_tier >= tier_county
}

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

diarch_cannot_be_disabled_trigger = {
	DIARCH = scope:actor
}
custom_tooltip = {
	text = diarch_shift_privileges_interaction.tt.no_affectable_counties
	scope:recipient = {
		any_held_county = {
			diarch_shift_privileges_valid_target_title_trigger = yes
		}
	}
}
custom_tooltip = {
	text = diarch_interactions.tt.you_must_be_in_an_entrenched_regency_to_access
	scope:actor = {
		is_diarch = yes
	}
}
trigger_if = {
	limit = {
		scope:actor = {
			is_diarch = yes
		}
	}
	scope:actor.liege = {
		has_diarchy_active_parameter = unlock_shift_privileges_interaction
	}
}
trigger_if = {
	limit = {
		scope:actor = {
			is_ai = no
		}
	}
	custom_tooltip = {
		text = interactions_general.tt.must_select_one_option
		OR = {
			scope:diarch_shift_privileges_interaction_duel_diplomacy = yes
			scope:diarch_shift_privileges_interaction_pay_prestige_partial = yes
			scope:diarch_shift_privileges_interaction_pay_prestige_full = yes
		}
	}
}
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 = log_diarch_send_interaction_as_variable_effect = {
	INTERACTION = shift_privileges
}
on_accept = scope:actor = {
	if = {
		limit = {
			scope:diarch_shift_privileges_interaction_duel_diplomacy = yes
		}
		duel = {
			skill = diplomacy
			target = scope:recipient
			50 = {
				compare_modifier = {
					value = scope:duel_value
					multiplier = 3.5
					min = -49
				}
				desc = diarch_shift_privileges_interaction.tt.success
				diarch_shift_privileges_interaction_apply_success_effect = yes
			}
			50 = {
				compare_modifier = {
					value = scope:duel_value
					multiplier = -3.5
					min = -49
				}
				desc = diarch_shift_privileges_interaction.tt.failure
				diarch_shift_privileges_interaction_apply_fail_effect = yes
			}
		}
	}
	else_if = {
		limit = {
			scope:diarch_shift_privileges_interaction_pay_prestige_partial = yes
		}
		random_list = {
			100 = {
				desc = diarch_shift_privileges_interaction.tt.success
				diarch_shift_privileges_interaction_apply_success_effect = yes
			}
			100 = {
				desc = diarch_shift_privileges_interaction.tt.failure
				diarch_shift_privileges_interaction_apply_fail_effect = yes
			}
		}
	}
	else = {
		custom_tooltip = diarch_shift_privileges_interaction.tt.success
		diarch_shift_privileges_interaction_apply_success_effect = yes
	}
	if = {
		limit = {
			scope:diarch_shift_privileges_interaction_duel_diplomacy = yes
		}
		custom_tooltip = diarch_interaction_pay_prestige_none
	}
	else_if = {
		limit = {
			scope:diarch_shift_privileges_interaction_pay_prestige_partial = yes
		}
		add_prestige = shift_privileges_interaction_target_discounted_cost_value
	}
	else = {
		add_prestige = shift_privileges_interaction_target_cost_value
	}
	tgp_activate_catalyst_against_hegemon_effect = {
		HEGEMON = scope:actor.top_liege
		CATALYST = catalyst_diarch_mandate
	}
}
debug_log = debug_log.shift_privileges.attempt_made

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