Add some extra power to your Taxonomies by registering them the Piklist way.
In this tutorial we’ll provide each logged in user with their own set of private tags.
Using Piklist you can easily display your Taxonomies as Radio, Checkboxes or a Select list (dropdowns)
WordPress hierarchical taxonomies allow you to assign terms to a parent term. In this tutorial we’ll show you how to group the child terms under each parent, and make the parent unselectable, forcing the user to only select the children.