I’ve been working with multifactor authentication in Azure along with Azure Active Directory Identity Protection lately and I keep forgetting where I go to change my phone numbers and information. You’d think you would find it anywhere your profile exists which is in many places in Office 365 and Azure, but I’ve only found it in one place.
Click on your name in the top right hand corner and select profile from the drop down
Then click Additional security verification
and voila, your MFA settings that you can change