Acknowledging an alert
How to acknowledge an alert on a host or service to stop notifications until it recovers, its effect on Business Activities, and how to disacknowledge it
Planning downtime
How to set fixed or flexible downtime on resources to disable notifications during planned maintenance, and how to configure recurrent downtime periods
Submitting a status
How to manually submit a status, output, and performance data for a passively checked service so that the scheduler takes it into account