Managing exceptions question

Thanks for putting this together. I am in a journey of learning more about DSC and in the process of learning how to scaffold for potentially thousands of endpoints where managing exceptions is a critical aspect of implementation considerations.

I am struggling to see in your example implementation how I can go about potentially having a main DSC configuration to manage local accounts across all endpoints while also having the flexibility of adding/removing accounts for endpoints that require special handling?

I know I made the question around managing local accounts very specific, this is more of a question around exception handling than a solution around managing local accounts. In case it's not obvious in my line of questioning.