Hello @Rizwan Assad
I would like to confirm that you can as an Admin you can publish Authentication method like mobile/phone number using Azure Portal. Publishing these values would make the account MFA capable and prompt user for MFA using contact number specified if enforced by Per-User MFA or Conditional Access. For more details about the steps, you can follow the steps as listed on following document: https://learn.microsoft.com/en-us/azure/active-directory/authentication/howto-sspr-authenticationdata.
You can use following screenshot for reference:
I hope this helps. If there are any further question, please feel to add a comment above.
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