Step 1 : Log into N99panel. From under N99panel dashboard, click on the admin username on the top right corner

Step 2 : Now click, 'Implement 2FA'

Step 3 : Enable/Disable 2FA

If the two factor authentication is not enabled, you can then scan the QR image using your Google Authenticator app to generate the code pertaining to the VPS. Upon submitting the code, two factor authentication would be enabled.

But if two factor authentication was already enabled, in that case the system will not the QR image, but upon entering the correct code, you will be able to disable the two factor authentication.