Got it. I apparently misunderstood the Mac portion then. However that still does not explain the other issue I outlined above...

I have a Windows 10 to Windows 10 situation that is also not working though. I was finally able to get the PIN to work, however the unattended password I used when creating the installer is not recognized.
In order to effectively deploy this, I need the custom password to work. Please advise...

This is what I am getting from the Mac trying to connect to a Windows 10 client machine. I am not given the chance to enter in the PIN or try the unattended password.