register another versions of the secondary menu in canvas under the mobile nevigation area.

function.sphp

add_action( 'woo_nav_inside', 'woo_custom_add_secondary_menu_to_mobile_nav', 10 );

function woo_custom_add_secondary_menu_to_mobile_nav () {
	
        $menu_location = 'secondary-menu'; // Change this to be whichever menu location you want to add.
 
    if ( has_nav_menu( $menu_location ) ) {
    	
    	echo '<div id="' . $menu_location . '-container-mobile" class="col-full custom-menu-location">' . " ";
    	echo '<h3 class="secondary-menu">Secondary Menu</h3>';
        wp_nav_menu( array( 'sort_column' => 'menu_order', 'container' => 'ul', 'menu_id' => $menu_location, 'menu_class' => 'nav fl', 'theme_location' => $menu_location ) );
    	echo '</div>

		<!--/#' . $menu_location . '-container .col-full-->' . "";
    }
 
} // End woo_custom_add_secondary_menu()