This section has nothing to do with XOA IP address, but useful to restrict some VMs to some IP address. I agree it's unclear. But as I said, for now, there's 0 GUI to configure the system per se.
That's why I said it could be an addition sure, but there's nothing yet, so adding it will take some time or efforts, and it's not a priority as we speak (our backlog is already pretty big). But again, as an Open Source project, we are welcoming contributions!