It's domino 12 one new feature that support TOTP, and HCL Traveler server also support TOTP authentication, but it requires to configure ID Vault, we could not skip or ignore this step.
ID vault does not support multiple passwords for administrator to retrieve the Notes ID for recovery.
In customer's environment, they need at least three parties (from the recovery authority) to input their correct passwords before recover the Notes ID. This practice has been run in a long time and fulfills their security requirement.
So please develeper investigate and improve this feature, thanks!