[CentOS] user 'not listed' on login screen

Tue Jun 30 17:22:37 UTC 2015
CS DBA <cs_dba at consistentstate.com>


I installed centOS 7 (KDE), I also created a user 'postgres'
the postgres user does not show up as a user on the login screen.

How can I make this user show up on the login screen? I've googled it
with no luck

Thanks in advance