Lightsquid and users statics

[abosami2000]

Hi guys,

I using pfsense in my big school and I have more than 50+ users , I using a  Captive portal to allow student to using internet , every student have a user.
I installed Lightsquid to give me more details about the traffic.

but when I go to status for captive portal , it did't give me any information about users who online just by IP or mac-address ( I want it to showing the infromation by username).

this is some screen shots

http://im84.gulfup.com/jm5vwi.png

http://im84.gulfup.com/Hqv0Ox.png

How can showing information by USERNAME

thank you