there are no guides or how-tos for it as it’s pretty much the same as a single-NIC setup. You just start a regular installation and configure only the NIC for the UCS network during the setup. Once the server is up and running, you can log in to the Univention Management Console (the web-based central domain & server management interface) and configure the second NIC there. For that reason
eth1 will be reversed to what you’ve shown in your picture, but that won’t have a detrimental effect on functionality.
Note that the installer defaults to configuring network adapters via DHCP. You should therefore select “start with manual network settings” in the boot screen.