As with Netframe Core, it may be beneficial to change your Manager from using DHCP to instead use a static IP address.
In your network's modem/router settings, make sure that the DHCP range does not cover the full subnet, so that there are some addresses available for static assignment.
e.g. if your LAN gateway is 192.168.0.1/24 with subnet mask 255.255.255.0, make sure the DHCP pool isn't 192.168.0.2 – 192.168.0.254. Generally, you want your static IPs to be on the higher end of the address pool, so maybe make the DHCP pool end at 192.168.0.200 (for example)
Once your Netframe Host is connected to the network and assigned an IP by DHCP, you can check that address in your modem/router settings (might be 192.168.0.150 for example)
Unlike Netframe Core, there is currently no way of setting the manager to a static IP using the GUI. It can however be done using the Manager Console User Interface (MCUI).
The two main ways of accessing the MCUI are:
sudo /var/netframe/mcui/mcuiLogin to the MCUI using your admin account (configured during installation). Then:

192.168.0.208/24Enter to leave the second one blankImportant: Once the settings have been configured, enter S to save them