To filter the report by user name right-click on the users icon in the bar in the left hand corner of the application. A menu containing the names of all the users will appear. To restrict by a user click on their name and a check mark will appear next to the name.
The report will now be restricted to those users with a check mark next to their name.
To clear the filter select the Show All menu item
Users that are not set up as adminstrators (or as members of the windows NT user group named Printer Monitors) are restricted to seeing their own documents in the printer usage viewer.