Filter categories/tags to display in multiple metaboxes for selection in back-end

Question

My site uses a lot of categories and tags for author selection in the back-end. To make it more user friendly for authors I need to arrange the categories and post tags in numerous metaboxes for selection on the post edit screen. I would like to display some selected categories and their children in one metabox for author selection while other categories will go into a second and third metabox and so on. The same should apply to the tags. Can anyone point me in the right direction how to accomplish such a customization? Can I register new taxonomies which will include categories/tags based on their ID's and create new metaboxes displaying only those ID's?

The Wordpress default metaboxes for categories and tags display all categories in one box.

Thanks!

Answer 1

Yup! Just register a new taxonomy in your functions.php and it'll show up in your post editor.

function my_custom_taxonomy(){
  $args = array(
   'settings' => 'here'
   );

   register_taxonomy('Authors', 'post', $args);
}

add_action('init', 'my_custom_taxonomy');

http://codex.wordpress.org/Function_Reference/register_taxonomy