Add to the function.php

 

function register_menu() {
	register_nav_menu('footer-menu', __('Footer Menu'));
}
add_action('init', 'register_menu');


 

Add this to the theme file: (header.php, footer.php, etc )

if ( has_nav_menu( 'footer-menu' ) ) { 
wp_nav_menu( array( 'theme_location' => 'footer-menu') ); 
}