You actually need to configure an Update Mirror on one computer and use Nod32 and Control Center. Click on the Mirror Setup and choose the location where the updates will be stored. Check the Windows versions where the updates will be installed from Files available. Do not enter a username and password at this time.
Once you complete this operation, go to each Work Station and use the Servers > Add server and configure the client to use the above created server. Click Update now and the process should start automatically.