can_be_any_kurultai_trigger

can_be_any_kurultai_trigger = {
	can_be_councillor_basics_trigger = yes
	$COURT_OWNER$ ?= {
		OR = {
			has_council_position = councillor_kurultai_1
			has_council_position = councillor_kurultai_2
			has_council_position = councillor_kurultai_3
			has_council_position = councillor_kurultai_4
		}
	}
	NOR = {
		has_council_position = councillor_spouse
		AND = {
			this = $COURT_OWNER$.diarch
			$COURT_OWNER$ ?= { has_diarchy_active_parameter = diarchy_is_vizierate }
		}
	}
	NOR = {
		has_council_position = councillor_kurultai_1
		has_council_position = councillor_kurultai_2
		has_council_position = councillor_kurultai_3
		has_council_position = councillor_kurultai_4
	}
	OR = {
		is_landed = yes
		is_knight_of = $COURT_OWNER$
		is_courtier_of = $COURT_OWNER$
		is_ruler = yes
		is_powerful_vassal = yes
	}
	OR = {
		is_ruler = yes
		AND = {
			is_female = yes
			$COURT_OWNER$.rite = { NOT = { rite_has_parameter = male_dominated_council } }
		}
		AND = {
			is_male = yes
			$COURT_OWNER$.rite = { NOT = { rite_has_parameter = female_dominated_council } }
		}
		AND = {
			has_trait = shieldmaiden
			$COURT_OWNER$.culture = { has_cultural_parameter = has_access_to_shieldmaidens }
		}
	}
}

As written in game/common/scripted_triggers/00_councillor_triggers.txt.