The project statistics page gives you the statistics  of the negotiations and correspondence for each vendor who was associated with that particular project.

 

The default view of the negotiations section will list each vendor, the status of the project and the total amount of submissions each vendor made.

The default view of the correspondence section will list the vendor name and the total amount of correspondence that vendor made.

 

 

 

When each section is expanded each section will be broken down to show each user of that vendor and how many submissions each user made and also the total amount of correspondence each user sent.