Selecting the Use Secondary User ID option adds a separate user ID in RMTrack for the Windows Authentication process. Secondary user IDs are useful when the Windows IDs are meaningless e.g. "5935jd" instead of "John Doe".
Logoff Action
Selecting the 'Clears browser authentication cache' option forces the clearing of the browser’s authentication cache. This means that when RMTrack is accessed via the internet using the Windows Authentication, the user will be prompted for logon credentials if they logoff and then logon again.