In DualShield, the authentication product (authenticator) that implements the on-demand password (SMS Passcode) authentication method is called T-Pass.
SMS Passcode
To use SMS to deliver on-demand passwords to users, set the following options in the T-Pass policy
In the Channels Used by the System section, set the Primary Delivery Channel to SMS
In the Channels Available to Users, tick SMS
Email Passcode
To use Email to deliver on-demand passwords to users, set the following options in the T-Pass policy
In the Channels Used by the System section, set the Primary Delivery Channel to SMTP
In the Channels Available to Users, tick SMTP