Hi @s.murray1
This is somewhat complex.
There is no “signup” for federated connections (Azure/Microsoft). An account is created automatically when a user logs in to these connections for the first time.
Having an account in multiple connections is a valid use case. If it is not what you want, there are tools (the pre-registration hook or action, rules or actions, account linking) to mitigate this.
I can’t help without a lot more detail. This question is one you might benefit from Auth0 professional services on.
John