Hi tech_unit,
not quite sure how NoMachine is related to your installation of [removed]. However, if you are asking about how to set the display number that NoMachine should use, you can do it by setting the appropriate key.
For physical desktops, specify the physical display or range of X server displays which are made available to NoMachine connections. It is possible to specify a # single display by display number, e.g. :0, or by port, e.g. 6000.
The range of displays can be specified as a dash-separated list, e.g. :0-:7 or, by port number, 6200-6204. By default all displays
detected as running will be made available for users.
PhysicalDisplays :0
For virtual desktops (if you are running for example Terminal Server) set the base display number for NX sessions.
DisplayBase 1001
If, on the other hand, you want to go into a detailed comparison of how NoMachine compares with the other product you are using, I suggest you contact our sales team 😉