Suprress Windows Logon

My associate found a way to suppress the Windows Logon and only allow the Microsoft Network Lohin screen. We set the default login screen to be the Windows Logon. A null entry is used for the password. Thereafter, a change in the Network passworddoes not require changing the Windows logon password.

Is there another way? Something that doesn’t require our sitting at each desk. Thanks for any help forthcoming.