The toolbox appears on a separate ribbon within Word.
This page gives a brief overview of the functions available within the ribbon and they are broken down here (or use the menus at the top):
Document Overview Report – report that can be generated in either Word or PDF file formats and it contains all the information displayed in the toolbox. New function being added to v2.2 (available soon)
The full details are in the manual, which is included in the .ZIP file on the Download page.