travel_leader_validity_trigger

travel_leader_validity_trigger = {
	base_court_position_validity_trigger = { EMPLOYER = $EMPLOYER$ }
	is_landed = no
	is_clergy = no
	custom_tooltip = {
		text = NONE_NOT_THE_SPOUSE_OF_CHARACTER_COURT_POSITION
		NOT = { is_spouse_of = $EMPLOYER$ }
	}
	custom_tooltip = {
		text = IS_NOT_APPLICABLE_DIARCH_COURT_POSITION
		trigger_if = {
			limit = { bannable_serving_diarch_trigger = yes }
			bannable_serving_diarch_trigger = no
		}
	}
	custom_tooltip = {
		text = IS_NOT_GONE_ADVENTURING
		trigger_if = {
			limit = { has_variable = gone_adventuring }
			NOT = { has_variable = gone_adventuring }
		}
	}
	custom_tooltip = {
		text = none_does_not_have_a_full_time_job
		trigger_if = {
			limit = { NOT = { has_court_position = travel_leader_court_position } }
			court_position_does_not_already_have_a_job_trigger = yes # This positions is considered a job, and cannot be held at the same time as another similar position
		}
	}
}

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