An individual student's timetable can be modified to remove them from one period of an existing class and place them into a unique class for them.
The timetable can be modified for an individual student to take them out of one period of an existing class and entered into something unique for them.
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Custom/Individual Student timetables - Add Special Class button from Modify Timetable
This can also be done from the View Timetable Page for a student. This is available by double clicking on an existing class in the Calendar View.