Total Time Web Browsing

I am currently using the demo version, hoping to prove the usefulness of this software to my bosses. They are asking for a report that will tell us how much time a person is on the Internet. I am currently using a Cisco ASA5520 as my firewall.

I am getting good data, but I am unable to get a total time on the Internet. I am getting multiple sessions for each person, not one listing per person with total time. Is it possible to a listing for each person and their total time browsing.

Also how can I get URL data on custom reports. I am getting a lot of unresolvable DNS entries on the outside, confirmed un pingable, but I do see data listed under URL detail. In order to get full resolvable detail info, do I need to set up a proxy server?

Thank you