To set an alarm on time, choose the data “UTC time” (in the folder miscellaneous) then choose the condition “more than” and write the wished time. The alarm will set off every day at the specified time. Of course, you can set several alarms on the same principle (one for each vacation as an example).
You can also set off an alarm at regular intervals: choose data ‘UTC times” then choose condition “vary more than” and enter the wished time (20min as an example). The alarm will set off every 20min (until you inactivate it).