Hello donniev,
Shouldn't be too hard. This document describes this functionality:
https://openvpn.net/vpn-server-resources/how-to-setup-dmz-in-openvpn-access-server/
The idea is that you specify the IP that the Access Server is listening on. If this is a machine that has a public IP directly on its network interface, then you can specify that IP. If this is a machine that has a private IP on its network interface, and the public IP is just NATted 1:1 to that, like is the case on Amazon AWS for example, then you can specify the private IP.
On my test machine on DigitalOcean I see that the public IP is directly available on the network interface. So you should be able to specify that public IP directly. In your case for example 165.232.152.180. You do this on the User Permissions page on the user account that you wish to redirect traffic to.
You can't "make up" public IP addresses like 165.232.152.x if you do not have that public IP on your server.
Kind regards,
Johan