I am developing an Outlook Addin and I have to use MS Authenticator app as the broker app for auth process in Outlook mobile client. I could not find supportive documents to do that.
following is about when creating an mobile apps but for my case I am using one addin for all platforms
https://docs.microsoft.com/en-us/azure/active-directory/develop/single-sign-on-macos-ios#sso-through-authentication-broker-on-ios
