Does Scriptcase only allow 1 2fa method to be active

Hi, Just checking, but SC offers 3 methods of 2fa. Email, SMS, and Google Authenticator.

Can you only use one method at a time.

For instance, I have google authenticator working fine, but a user has asked if they can use email instead.

I am not sure if each user can pick their own choice of method or not?

And if yes, how?

Thanks
Tony