[xubuntu-users] disable autologin

[Thomas]

Good morning
I installed xubuntu 14.04 with the option "automatically login" (that is
what I want!)
However, now a situation has developed, where I would like to login as a
different user.

How can I disable the automatic login, since just creating a new user
etc. does NOT prevent
the computer from constantly and (naturally) automatically loggin in as
the original user.

Thank you in advance.
Thomas