gdm user and pass fields together

[Marcos Antonio Dellazari <marcos ad gmail com>]

Hi all,

I'm a gnome user from Brazil, here in my company we're migrating to
GNU/Linux desktop. We're using gnome e gdm. 
My boss wants that the login screen (GDM) shows up the user
e password fields together, not username <enter> and password <enter>.
Furthemore, he wants that gdm save and remember last username login,
so the user only types the password and log in.

Is this possible? 
(Sorry for my poor english...)

Marcos Antonio Dellazari
Support Engineer
Itaipu Binacional - Brazil

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