You won’t be able to delete timetable slots if you’ve begun to take attendance. We advise ending the timetable slot first then importing your new timetable or and adding a new slot from the course (shown in the section at the top of this article).
Go to School > Timetable > Timetable Administration > Timetable Slots. You can filter on this page if you only want to see a specific year group, course or lessons taught by a certain teacher.
To delete timetable slots, you can use the tick box's next to the lessons you want to remove. Within the blue pencil icon select Delete Timetable Slots.
Using this option, the slide over will let you know which timetable slots you're going to delete. Check this carefully, then click Delete.