Add UTM tracking to footer menu use case links.

add_specific_menu_utm_parameters.php

<?php
/**
 * Add UTM tracking to footer menu use case links.
 */
function add_specific_menu_utm_parameters( $atts, $item, $args ) {
	if ( $args->menu->slug == 'footer-menu-use-cases' ) {
		$atts['href'] .= '?utm_source=footer&utm_medium=' . $atts['title'] . '&utm_campaign=use-cases';
	}
	return $atts;
}
add_filter( 'nav_menu_link_attributes', 'add_specific_menu_utm_parameters', 10, 3 );