Minimum number of minutes between cron runs. Cron will actually execute during the first page request after the interval has elapsed.

The number of minutes to wait after a cron run error before retrying.

If you want to log successful cron runs to the Drupal watchdog, say Yes here. If those messages annoy you, disable them by selecting No.

If you want to log the progress of a poormanscron run to the Drupal watchdog, say Yes here. If those messages annoy you, disable them by selecting No.