If this option is available in your WDK-based application, you can navigate categories.
When you open the Categories node, the active taxonomies appear. Each taxonomy is a grouping of categories and subcategories used to organize content in a particular way. When you open a taxonomy, the top-level categories appears. When you open a category, its first level of subcategories appears, and so on.
To navigate categories:
If this option is available in your WDK-based application, you can navigate categories.
Click Categories.
Click a taxonomy.
Click a category. Continue clicking categories until you find the item you are looking for.