You may need to change the timetable periods you've assigned to your timetable mid-year, for example for schools new to Arbor who need to amend their school timetable, or if your school have set up a new timetable where the old timetable periods are no longer suitable.
We usually advise against changing your timetable periods mid-year, as any changes made will be applied to all sessions in the past. This means that your reporting and timetables for past weeks may not align with the correct timetable periods. However, changing this has no effect on the actual attendance taken.
You'll need the Teaching: Administer permission to edit timetable periods. If you don't have the permission, you'll need to ask your admin team to give you permission using these instructions.
If you do need to change the timetable periods, go to School > Timetable and on the left select Timetable Administration > Timetable Settings.
From this page, you can add new periods on the right using the highlighted +Add button, and delete old periods in bulk by selecting those you wish to remove and using the blue pencil option.
You could also edit the times of the periods - select the relevant period and then use the options on the slide over to amend the times.