Show Taxonomies with admin area for custom post type?

Question

I'm not sure if this possible, but I'd like to be able to show my taxonomies within the admin area of my custom post type so that WordPress users can sort the posts my e.g. subject.

Here's my code for my custom post type and taxonomies

register_post_type( 'courses',
    array(
    'labels' => array(
      'name' => __( 'Courses' ),
      'singular_name' => __( 'Course' )
    ),
    'public' => true,
    'has_archive' => false,
    'rewrite' => array('slug' => 'courses/%subject%'),
    )
);
}

function themes_taxonomy() {
register_taxonomy(
    'campuses',  // The name of the taxonomy. Name should be in slug form (must not contain capital letters or spaces).
    'courses',    // post type name
    array(
        'hierarchical' => true,
        'label' => 'Campuses', // display name
        'query_var' => true,
        'rewrite' => array(
            'slug' => 'campus',    // This controls the base slug that will display before each term
            'with_front' => false  // Don't display the category base before
        )
    )
);

register_taxonomy(
    'ages',  // The name of the taxonomy. Name should be in slug form (must not contain capital letters or spaces).
    'courses',    // post type name
    array(
        'hierarchical' => true,
        'label' => 'Ages', // display name
        'query_var' => true,
        'rewrite' => array(
            'slug' => 'ages',    // This controls the base slug that will display before each term
            'with_front' => false  // Don't display the category base before
        )
    )
);

register_taxonomy(
    'subject',  // The name of the taxonomy. Name should be in slug form (must not contain capital letters or spaces).
    'courses',    // post type name
    array(
        'hierarchical' => true,
        'label' => 'Subjects', // display name
        'query_var' => true,
        'rewrite' => array(
            'slug' => 'subjects',    // This controls the base slug that will display before each term
            'with_front' => false  // Don't display the category base before
        )
    )
);
} add_action( 'init', 'themes_taxonomy');

Answer 1

As documented, you can set the show_admin_column argument of register_taxonomy() to true to do this:

'show_admin_column'
(bool) Whether to display a column for the taxonomy on its post type listing screens. Default false.

For example:

register_taxonomy(
    'subject', // The name of the taxonomy. Name should be in slug form (must not contain capital letters or spaces).
    'courses', // post type name
    array(
        'label'             => 'Subjects', // display name
        'show_admin_column' => true,
        'hierarchical'      => true,
        'query_var'         => true,
        'rewrite'           => array(
            'slug'       => 'subjects', // This controls the base slug that will display before each term
            'with_front' => false, // Don't display the category base before
        ),
    )
);