WordPress.org

Why aren't the settings for the Override Arguments aren't affecting my page menu?

You will need to alter your template files to use wp_list_pages_plus() instead of wp_list_pages('args'). This is usually located within your themes sidebar.php template.

How can I include only a couple of pages in my menu?

You can now switch between using an Exclude or an Include on the settings page.

What else can I do with this?

All wp_list_pages(); arguments can be set within the function's template call. Find your themes template file that contains the wp_list_pages_plus(); call, usually sidebar.php and edit the function like so, wp_list_pages_plus('args=values'); Available arguments can be found at wp list pages.