To log in with your student account (using Name / TSDS):

Uncheck the "Guest User" checkbox (both fields will become blank)
Enter your First Name and TSDS in the fields above.

To log in as a Guest (anonymous user):

Mark the "Guest User" checkbox (both fields will automatically display Guest)
Click [Sign In] to login to the Training Test as a guest user.

Guest Session?
In a Guest Session, you do not need Test Administrator approval and can take a Training Test using your own settings. To take a Training Test in a session with a Test Administrator, uncheck the “Guest Session” checkbox and enter the Session ID in the field before clicking [Sign In].