Iptables + Openvpn. How to disable route through the VPN for a customer so that only he worked through the provider?

Good day!
How to disable route through the VPN for a customer so that only he worked through the provider, and other customers have used ultimate VPN gateway, the local network was accessible to all?
No settings on the client machines(prescription get).
The interface: TAP.
March 23rd 20 at 19:01
2 answers
March 23rd 20 at 19:03
1. In the OVPN server config add:
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client-config-dir /etc/openvpn/ccd
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2. For the right customer and add the parameters:
/etc/openvpn/ccd/client1
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# push the reset stops to give the client General settings assigned to the push command in the config file of the server
push reset
# Route who want to give this client
push route 192.168.100.0 255.255.255.0
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