In the old days (if I recall this correctly NAV 3.70 and earlier) all you had to do was create a copy of the server folder change the name of the second server and make an entry in the hosts and service files for each server and you were good to go. (Note: these two files are in the well-known “C:\Windows\System32\drivers\etc” folder) To change a setting to one of the servers, you just opened the folder of the corresponding server and with the “server.exe” you could change the settings for that server.