RUTX50 Mutliple CN option

Hi!
Have an issue when multiple connections happens through OpenVPN.
The error log says:
“”“”“Fri May 9 15:11:36 2025 daemon.notice openvpn(Test)[4328]: MULTI: new connection by client ‘Client’ will cause previous active sessions by this client to be dropped. Remember to use the --duplicate-cn option if you want multiple clients using the same certificate or username to concurrently connect.”“”"

The question is were can i put this “–duplicate-cn”? Do i need CLI?