Timetable and scheduling
Enroll and pay, class and schedule, attend and consume hours, leave and make-up, renew and transfer are one chain. Parents need few steps: see the timetable, leave, pay. Academic ops must change classes, switch teachers, and see remaining hours. We first watch peaks: opening week and renewal month. How a pack deducts, how a trial converts, how a pause freezes, live in the system so the desk does not mental-math remainders. Teacher pay by attendance or by class that does not match consumption records becomes a dispute; pay must come from the same attendance sheet.