What does it mean to check "windows account" for a user account? In TrueNAS CORE

How can one and how should one use this property?

Does it mean you have to name the user account “name.surname” from the mail address “name.surname@outlook.com”??

Or does it mean that there are more ways to present credentials than just username+password???

Does this property change how an SMB share owned by the user in question can be accessed from a W11 machine??

Or is the meaning of the “microsoft account” property something completely different???