Segundo Menu Comoaz

if ( ! function_exists( 'vc_navigation_menus' ) ) {

// Register Navigation Menus
function vc_navigation_menus() {

	$locations = array(
		'menu-sm-footer' => __( 'Redes sociales footer', 'vc_navigation_menus' ),
	);
	register_nav_menus( $locations );

}
add_action( 'init', 'vc_navigation_menus' );

}