The Timetable allows for automatic task to be done. Like automatic wipes, backups, restarts, chats, etc...
A detailed documentation is found in the timetable window itself. Just select a task and you will see an explanation at the bottom of the window.
The timetable could look for example like this (see also the restart Job with its Sub Actions):
You can select a timetable and klick "Start manualy". You can also edit the data afterwards to directly start whatever job you want. You can also deactivate a timetable entry to prevent it beeing called.