How to set traffic limit for wireguard users?

Question

VPN

There is Wirefuard via pivpn. Several users are configured in it, the server on which the vpn is installed has a traffic limit of 1tb. How can wireguard users specify a traffic limit so that they do not go beyond it?

For example, there are 4 users and a total traffic of 1tb. It is necessary that 1 user had 250GB. The number of users in the system will be fixed

Answer 1

Clamp the maximum speed on the server.

Answer 2

By regular means - in any way. You can install and configure Squid, there is such a feature. But how to make friends with Wireguard - hz, I have never done this.