Just a quick question

We put in a unit here as a firewall for our office.

I was wondering if I can see anywhere what IP is sucking most bandwidth? (say phones on wifi for example) Then I could reduce bandwidth for specific IP, or MAC, or alternatively, just default to low speed, and then specify MAC addresses outside of this.

I did also see a QOS option, but can I add something specific for our VOIP phone system? (I saw options for SKYPE, etc, but was wondering if there was an option for something else)