You must register an application in the Azure AD tenant where the user
accounts reside.
Log in to the Azure account.
Navigate to Azure Active Directory > Manage > App registrations > New registration.
Enter the details in the Register an application
page.
You can copy the Redirect URL from WebTools > Configure > Network > Single Sign-On. The app will be registered even if you do not add the Redirect
URL at this time. You can add the Redirect URL later.