If this option is available in your WDK-based application, you can create categories within taxonomies.
To create a category:
Select File>New>Category.
In the Create tab, enter the name of the new category.
In the Info tab, set properties as desired.
Depending on your WDK-based application, other tabs might appear. Set information in these tabs as desired. For information on the functionality affected by those tabs, see the topic in this guide that covers that functionality.
Click Finish.