When you set up a two factor authentication for Email quarantine portal, all of your portal users must enter a VIP Credential ID, in addition to the username and password, to log in to the portal.
Only one set of credentials per user is permitted. You cannot use different credentials (for example, VIP for Mobile and VIP Security Token) for a single user.
Email Security.cloud
To set up your own VIP credential after enabling two factor authnetication :