tour_stop_host_effect

tour_stop_host_effect = {
	set_variable = {
		name = stop_host
		value = scope:host.location.county.holder
	}
	var:stop_host = {
		# Remove character flag which prevents vassals to be visited from starting other activities
		if = {
			limit = { has_character_flag = being_visited_on_tour }
			remove_character_flag = being_visited_on_tour
		}
		add_to_activity_without_travel = scope:activity
		save_scope_as = stop_host_scope
		scope:host = {
			save_scope_as = visiting_liege
		}
	}
	add_to_variable_list = {
		name = tour_visited_vassals
		target = var:stop_host
	}
}

As written in game/common/scripted_effects/04_dlc_ep2_tour_effects.txt.