Click on the pencil icon to edit the timetable attributes. The following window will pop-up.
You can optionally change the Public ID to be a more meaningful name to your timetable.
Change the time-slots as needed. In this example, they are 30 minute time-slot between 8am and 3pm.
Extra information about the timetable can also be added, and will be displayed to users.
Next: Manage resources