Packages, credits and seats配套、课时与座位
The three ideas the whole system is built on. Ten minutes here saves a lot of confusion later.整个系统就建在这三个概念上。这里花十分钟，后面省下很多困惑。
这篇指南的正文目前只有英文版。标题、摘要与导览已翻译；内文仍在翻译中。
Almost every question staff ask — "why did this class not deduct?", "why is the child still on the roster?", "which package paid for this?" — comes back to three ideas. They are worth learning once.
A package is what the family bought
A package is a purchase: a number of classes, a term, or a period of time. It carries the credits the family paid for, an expiry, and the rules that came with it — whether it can be frozen, whether it can be used on a weekend, whether it covers private classes.
A package belongs to the family, not to a class. The same package can pay for a child's Tuesday class and their Saturday class, and a family pool package can pay for two siblings.
A seat is the child's place in a class
When you book a child into a class, they take a seat in it — week after week, same day, same time, until something ends it.
A seat belongs to one class. If a child moves from Tuesday to Thursday, that is not the same seat continuing; they gave one up and took another. This is why "in this class since" restarts on a move, and why it does not restart when you only change the coach — that rebuilds the same slot, and the child gave nothing up.
Credits are spent by attendance, not by booking
This is the one that surprises people.
Booking a child into a class does not spend anything. The credit comes off when attendance is marked — so a class that has not happened yet has not been paid for, and a child booked into two classes a week is not charged twice until they actually attend twice.
Each seat draws on one package at a time. When that package runs out, the seat moves onto the next one the family holds. That move is called a changeover, and it happens at the class where the old package can no longer pay — not on the day of purchase.
Which package pays
When a seat has to move on, Hull looks for the package that was valid on the day of the class — not the day you are clicking. That distinction only shows up when you mark a register late, which happens often enough: the package that covered a Tuesday in July is the one that pays for it, even if it has since lapsed and the family has bought a new one.
Among the packages that could pay, it prefers, in order:
- one already part-used over an untouched one — a half-finished package is the one at risk of not being finished in time;
- a shared family pool or a duration-based package over a term;
- a term package whose dates do not cover that class, last of all. It will be used if there is genuinely nothing else, but Hull will not quietly start a term the child has not begun.
You can still pick a package by hand and it will be honoured, including a term that has not started yet.
When the system asks you to choose
If a seat's package runs out and the family holds more than one package that could take over, the system stops and asks which one to use. It cannot guess: the packages may have different expiry dates, different rules, or belong to a pool shared with a sibling.
Pick the one you would have picked at the counter. The dialog shows the credits left, the expiry, and any siblings sharing the pool.
If only one package can take over, it happens silently and nobody is asked.
How the family paid for it
Each package now shows which payment method paid for it — cash, transfer, card, or settled from credit the family already had. It is the question the front desk is asked most often about an old sale, and it used to mean opening the invoice behind it to find out.
Putting it together
- Package — what was bought. Holds credits and rules.
- Seat — where the child sits, week after week, in one class.
- Credit — spent when attendance is marked, from the package the seat is drawing on.
Related: Attendance statuses explained · Find out where a package's credits went · Book a child into a class.