Vpn ssl and public ip

Hello everyone, I thank in advance all those who answer my question. By making the connection through the Forticlient application, I would need my public address to be the one on which I terminate the reomta connection of the fortigate. Using open vpn as a service this happens regularly, once connected in vpn my public address is changed to that of the remote office, if connection effect with forticlient remains that of the local office from which I connect. What strategy can I implement to go out with the public of the remote office? Thank you