In addition to using your Microsoft 365 user credentials to sign in to the Backup Portal, you can also set up alternative user credentials to make sure that you can always access your (organization's) backups. For security reasons it is recommended to set up Multi-Factor Authentication (MFA) for your alternative sign-in process. To set it up, first sign in to the backup portal with your Microsoft 365 user credentials. On Users page, click the Key icon 'Edit alternative email' next to your own username.
Click the pen icon for ‘Multi-Factor Authentication’ to set it up.
You can see a QR code and setup key which you can use in your Authenticator application (Microsoft Authenticator, Google Authenticator etc). Scan the code or add the key to your Authenticator.
Next confirm the MFA setup by entering the code from your Authenticator application and clicking Enable Multi-Factor Authentication.
Now you are all set! Next time when you sign in with your alternative user credentials, you are requested to confirm the sign-in with an MFA code.