How do I configure one OPNsense to run virtual machines on the same LAN, with in

[Sanctus]

There is a subnet of IP addresses, OPNsense and hypervisor. The task is to have all virtual machines working in the same local network, but accessing the network through different, manually assigned ip addresses. Is it possible to realize this on a single OPNsense? If yes, how exactly?

I realize that OPNsense is not really suitable for these tasks, but it is the only one that allows to easily attach a Zerotier network.