There's a chicken-egg-like problem involved with that based on the cryptokey routing that wireguard does.

The, a bit unfortunately named, 'allowed-ips' parameter determines to which peer wg routes a packet.

If you imagine three peers connected to your one central vpn server then for this to work you have to have an allowed-ips parameter set to the same /64 network for each of them from the point of view of the server, which creates a conflict.

There is a project to configure allowed-ips dynamically but it's not active any more unfortunately https://github.com/WireGuard/wg-dynamic/blob/master/docs/ide...