rrd no cron_interval poller_interval default time add

[aoki]

Default wants to make the RRD file every 15 minutes though is made the rrd file every five minutes.
Moreover, the settings table of the Cacti data base.
It wants to add the value to poller_interval and cron_interval, and to change from the browser screen of Cacti.
I am sorry, it embarrasses, and I wish teaching.