Change login screen with GUI

I just changed my login screen option to require type the user name, but I decided go back to default where I just need to type the password.

I did it in any place in a configuration GUI but I am not finding it again.

Can someone help me?

How I can change it back?

Where I find this option?

Thanks for help!

Isn’t that under users? You’ll find it in (in category view) System Tools —> Users


No, it is not there.
At Users we can only define the username and password, but we do not define what will be asked at login screen.
Would be there but it is not.

Looking to your image I could find. It is inside Login Window in tab users.
Thanks a lot!