Multiple authentication methods in ASP.Net Core application

I have a requirement where I need to authorize internal users via Azure AD and external users via Individual User Accounts in my .Net core application (I cannot use Azure B2C for external users).   Is this possible?  When I create a new application I can only select one method.    

Is it possible to have the Individual User Account scheme access Azure AD like it can with Google or Facebook accounts?

Any help is most appreciated.