How to manipulate the Subject NameID format in Azure for xMatters SSO

Question 

When setting up Azure for SSO to xMatters, the claim may be sending the subject nameID in one format (like SAMAccountName) when another format like e-mail would be more desired based on how either the xMatters user ID or weblogin ID is configured. Where do I change that in Azure?

Environment

All versions of xMatters, Microsoft Azure

Answer

We found this page from the Microsoft website to be a handy resource for Azure administrators who want to edit the claim to conform to the data in xMatters:

https://docs.microsoft.com/en-us/azure/active-directory/develop/active-directory-saml-claims-customization

You can also find information on the SAML 2.0 authentication requests and responses that Azure Active Directory supports for Single Sign-On in the Single Sign-On SAML protocol topic on the Microsoft website.