Support for User Taxonomies

Hello,

I’ve registered user taxonomies as per Justin Tadlock post: Custom User Taxonomies in WordPress.

I’d like to extend Category Order and Taxonomy Terms order, so that it also works for custom user taxonomies.

I’ve tried to add user page as following:

$post_type = 'user';
add_users_page(
  __('Taxonomy Order', 'to'),
  __('Taxonomy Order', 'to'),
  'level_8',
  "users.php?post_type=". $post_type . "&page=to-interface-". $post_type
);

However, with that I’m getting You do not have sufficient permissions to access this page. If I try the following page URL users.php?post_type=user then it loads the main ‘Users’ page.

I would hugely appreciate any help and advice how can I add support for ordering for Users.

Many thanks,
Dasha

https://www.ads-software.com/plugins/taxonomy-terms-order/