In the Menu Bar, click Edit > Preferences, then on the left side of the dialog box, select Extended Reality > VRPN Tracking. After making any changes, press Apply and Save to save them.
Default Config File - Specifies the default configuration file for a VRPN tracking server. This will be used in the VRPN Tracking dialog box, if you right-click the Server box and select Use Default Config File.
Load Configuration From Project - Makes it possible for the current configuration to be overwritten with the one from a loaded project.
Clear Session On New Scene - Clears the current configuration for a new scene.
Auto Start/Stop Internal VRPN Servers - Automatically starts or stops internal VRPN servers when enabling or disabling tracking.