Mybook Essential backup multiple users

I recently purchsased a 2TB Mybook Essential.  When I use the software that comes with this it seems that I can only  backup data for one user at a time.  Is there a way I can backup data for all users?  Is there also a way I can select specific files to backup?  It seems to determine what files need to be backed up based on the category the file falls under.

I think it can only backup the user that you are currently signed in

try updating to the latest version but I do not see any reference about multiple users backup at the same time

you can also try Windows Backup