NCF has very many settings. Being able to save several different configurations of these settings lets you
A configuration is the state NCF is in at any time. To create a new configuration, first save your current configuration. Then change whatever settings you want, go to the File menu, select Save Configuration As, then specify the name you want to give the new configuration. The File menu item New Configuration is simply the default settings that NCF had when first installed. This is given for your convenience when making new configurations, but you need not use it while creating a new configuration.
The default configuration file NCF uses is named configuration.cfg, located in the directory. You can create several different configuration files simply by giving each a different name.
A configuration file can be protected by password. To do this, click Options > General, then click Enable in the Password Protection section of the dialog box.
To change to a new configuration, click File > Load Configuration and then select the configuration file you want or select the configuration name from the File menu between Save Configuration As and Exit.
When exiting NCF, the configuration file that is currently in use is saved and it will be automatically loaded the next time NCF is started.