If you have already downloaded and installed Microsoft Authenticator on your smartphone, open Microsoft Authenticator on your smartphone.
On the Microsoft Authenticator main page, tap the plus icon at the top. There are three types of accounts that can be added: Personal Account, Work or School Account, and Other Accounts (Google, Facebook, etc.). You should select Other Accounts (Google, Facebook, etc.). There are two methods to add an account in Microsoft Authenticator:
Scan QR Code
If you select Other Accounts (Google, Facebook, etc.), you will automatically be directed to the Scan QR Code page. Point your camera at the saved QR Code.
Enter code manually
If you do not have the QR Code saved, you can tap the Enter code manually button on the Scan QR Code page. This will open the Add Account page, where you need to enter the Account Name and Secret Key that you obtained when activating Multi-Factor Authentication in the Deka GPU Portal Service.