How to Reset Two-Factor Authentication once it has been enabled for a user.
NOTE: This can only be done by a firm administrator.
Navigate to the
icon in the top right corner of your account and select Users.
Locate the user for which you'd like to reset two-factor authentication.
Click the dropdown arrow in line with that user and select Reset Two Factor.
Resetting Two-Factor Authentication for a user will remove this option from any saved devices, and the user can re-authenticate upon their next login.