You need to set up a scheduled event to roll over that users accounting each day. Then create a policy in a place that will catch all his requests passing through WinGate; i.e. to allow for the different connection methods.
NAT = Extended Networking Service Policy.
WinGate Internet Client (WGIC) = WinSock Redirector Service Policy
Proxy = Any particular service.
Your desired result could be set in the System Policies (Default Rights), but it depends how your Server / Services are set to interact with the System Policies.
http://forums.qbik.com/viewtopic.php?p=23285#23285
The Policy to restrict a user’s limit will look like this.
Advanced tab of the user’s policy:
Filter 1.
This criterion is met if User: Bytes received for client Is Less Than 50000000
With the bandwidth throttling, I think Genie is saying create a restriction with the amount of the bandwidth speed he is allocated, then when you create the rule, have the Control Max TCP Windows box checked. For the source address it will be similar to this format, 192.168.0.2 / 255.255.255.255