The Hour / Day settings allow you to restrict your filters further or perform additional tasks.
Filter Day & Hour Configuration
The Filter day & hour configuration allows you to set a filter active/inactive for certain hours of the week (more information).
Filters can be configured to automatically expire at a certain date/time in the future (more information).
Summary notifications allow you to receive a summary email at certain times during the week/day, instead of receiving emails immediately. This feature can also be used in connection with an ODBC notification (more information).
You can become notified if a certain event does not appear in the event log during a certain time period, for example an event confirming that a backup job was successful (more information).