INFO: setup
Adding group 'ntp' to your system ...
 - Groupid: 123
Adding user 'ntp' to your system ...
 - Userid: 123
 - Shell: /sbin/nologin
 - Home: /dev/null
 - Groups: ntp

WARN: postinst
You can find an example /etc/ntp.conf in /usr/share/ntp/
Review /etc/ntp.conf to setup server info.
Review /etc/conf.d/ntpd to setup init.d info.

LOG: postinst
The way ntp sets and maintains your system time has changed.
Now you can use /etc/init.d/ntp-client to set your time at
boot while you can use /etc/init.d/ntpd to maintain your time
while your machine runs