All users need two factor authorization (2FA) to access VT ARC systems.
Details about setting up and using 2FA are in:
If you are using the DUO app on a cell phone for your 2FA, then you
can click on the key next to "VT", and a code will pop up. Then, when
you log into any 2FA system, you can follow your password by a comma and
then the code:
This alternative is useful for situations where cell phone service is
an issue, or for dealing with systems with a fast timeout, such as ETX.