To add timeslots to a teacher’s Schedule Tab, click into the next empty row and enter the timeslot details. 

The ‘Start Time’ field has a dropdown list of times. The list can be customised using the yellow pencil icon. A custom start time can also be entered at any time by clicking into the field. 

Either continue to add the required timeslots, or fill each timeslot as you add it – whichever is easiest.