If you no longer require a document categories, you can also delete.

1. Go to Admin > Guest Login and scroll to the bottom of the page.
   There you will see a table with all your file categories.
2. Click Edit on the right hand side of the category.
3. Click Delete.

You will see a prompt to confirm that the category is to be deleted (which asks "Are you sure?") - click OK. The page will refresh.

When you now look at the table of your uploaded documents at the bottom of the page, you will see that the category has been deleted, but the document is still there.