<?php
// Function to change the `WP News and Scrolling` Widgets Pro category slug
function wpnw_pro_modify_news_cat_slug( $slug ){

	$slug = 'news-category'; // Write your desired slug

	return $slug;
}
add_filter( 'wpnw_pro_news_cat_slug', 'wpnw_pro_modify_news_cat_slug' );
?>