nbmblueeye

The Plugin will help you easy to add Custom Taxonomy to your Post, Custom Post Type. 
You just input the post_type and The Name of Taxonomy, 
You should tick to hierarchical option: will become Category or become Tag);
If you want to update, remove the existing taxonomy just go to page MCT_All, this page will be used to manage your added custom taxonomy
Ordered list: 
– Existing Custom Post Type Slug: the slug name from post_type, which is the one you want to add custom taxonomy 
– New Taxonomy Name: the name of Custom Taxonomy, which you want to add. will be display on the admin menu 
– New Taxonomy Slug: add the slug of the custom taxonomy, which you want to add

My Custom Taxonomy

This Plugin will be used to add custom taxonomy onto your Post, Custom Post Type

John James Jacoby

Stuttter

WP User Groups allows users to be categorized using custom taxonomies & terms.
<ul>
<li>“Groups” & “Types” are created by default, and can be overridden</li>
<li>More user group types can be registered with custom arguments</li>
<li>Edit users and set their relationships</li>
<li>Bulk edit many users to quickly assign several at once</li>
<li>Filter the users list to see which users are in what groups</li>
<li>Not destructive data storage (plugin can be enabled & disabled without damage)</li>
<li>Works great with all WP User & Term plugins (see below)</li>
</ul>
<h4>Also checkout</h4>
<ul>
<li><a href="https://wordpress.org/plugins/wp-chosen/" title="Make long, unwieldy select boxes much more user-friendly." rel="ugc">WP Chosen</a></li>
<li><a href="https://wordpress.org/plugins/wp-pretty-filters/" title="Makes post filters better match what's already in Media & Attachments." rel="ugc">WP Pretty Filters</a></li>
<li><a href="https://wordpress.org/plugins/wp-media-categories/" title="Add categories to media & attachments." rel="ugc">WP Media Categories</a></li>
<li><a href="https://wordpress.org/plugins/wp-term-order/" title="Sort taxonomy terms, your way." rel="ugc">WP Term Order</a></li>
<li><a href="https://wordpress.org/plugins/wp-term-authors/" title="Authors for categories, tags, and other taxonomy terms." rel="ugc">WP Term Authors</a></li>
<li><a href="https://wordpress.org/plugins/wp-term-colors/" title="Pretty colors for categories, tags, and other taxonomy terms." rel="ugc">WP Term Colors</a></li>
<li><a href="https://wordpress.org/plugins/wp-term-icons/" title="Pretty icons for categories, tags, and other taxonomy terms." rel="ugc">WP Term Icons</a></li>
<li><a href="https://wordpress.org/plugins/wp-term-visibility/" title="Visibilities for categories, tags, and other taxonomy terms." rel="ugc">WP Term Visibility</a></li>
<li><a href="https://wordpress.org/plugins/wp-user-activity/" title="The best way to log activity in WordPress." rel="ugc">WP User Activity</a></li>
<li><a href="https://wordpress.org/plugins/wp-user-avatars/" title="Allow users to upload avatars or choose them from your media library." rel="ugc">WP User Avatars</a></li>
<li><a href="https://wordpress.org/plugins/wp-user-profiles/" title="A sophisticated way to edit users in WordPress." rel="ugc">WP User Profiles</a></li>
</ul>

WP User Groups

This plugin is tremendously solid. Used it to build a complex system of content teams who could only create or edit content within their own team. WP User Groups handled the "teams" of users which corresponded with taxonomy terms associated with the content. Works like a charm. Plugin itself is lightweight and simple to grasp.



Solid foundation for development

I've been using this for a fairly complex WP build and I've been very impressed. The back-end is easy for users and there's a nice API for devs. Two thumbs up.

Very well-executed

When you need to group your many users beyond just their role, this is the pluging. Works very well, properly coded.

Very useful

WP User Groups allows users to be categorized using custom taxonomies & terms.

My Custom Taxonomy vs WP User Groups