The Cron Jobs feature allows you to run Server based programs on a schedule such as statistics programs or to run say a report program that will either generate results on a web page or send the results via E-Mail. Whatever your program is, the Cron Jobs system allows you to automatically run that program at scheduled intervals or simply one time. The Cron Jobs system should be used by experiened users of the cron system.
A suggestion, is not to run a cron job say every minute as that would end up using more resources than allowed and you would risk suspension of your account.
Below is a screenshot of the CronTab screen.