The "Scheduled Tasks" given here are executed automatically by Hamster's built-in scheduler. You can use it to start "User Tasks" or scripts periodically, e. g. to fetch mails every 30 minutes throughout the day.
On Mon, Tue, ..., Sat, Sun:
Mark the weekdays, on which this entry should be executed.
Between ... and ...:
Give the time range in which this entry should be executed.
Start ...:
Select one of the user tasks or scripts that should be started.
Every ... minutes:
Select or enter the number of minutes after which the selected task should be repeated within the given time range.