A calendar uptime is used to keep the server running for a specified time span.

To create an uptime, you have to enter start (1) and end time (2). Read monitoring how-to for more details. 

This action is executed as a single action (3) on the selected day (see dialog caption), or repeated on the selected days of the week (4). 

You can optionally decide to wake your server up on start or you can decide to add an end action.

Monitoring How-To 

Calendar wake-up 

Calendar end action

Calendar page tab