Internet via VPN Client

[Andrii]

Hi.

I have interesting task:
2 Devices: 1 - RT-AC3200 (Open VPN server), 2 - RT-AC68U (Open VPN client)

I need to make routes for clients of VPN server's go to the some internet adresses via RT-AC68U (Open VPN client).

For example:
RT-AC3200 (Open VPN server)
IP address: 192.168.1.1
VPN pool: 10.0.1.0\24

RT-AC68U (Open VPN client)
IP address: 192.168.2.1

Client with IP 192.168.1.5 need go to the IP 8.8.8.8 via gateway 192.168.1.1, but to the IP 7.7.7.7 via gateway 192.168.2.1

Anybody can help me to configurate routes?