Category management

The categories of the media library allow you to organize the different media by type, which in turn allows you to find them more easily.

To create a category, go to the administration column on the right and find "Media library" then "Category management" or click on the Categories tab from category management.

You can create as many categories as you want; you can even create subcategories by sliding one category over another.

Media can only belong to one category.  Be careful to make sure that the proposed categories are distinct from one another.