Everything the B2B Invoice System does — invoices, customers, expenses, receipts, PDF export — plus a class calendar for businesses that sell lessons, courses or sessions. Sell a customer a package, run it on the calendar, then bill it as a normal invoice. 包含 B2B 發票系統的所有功能 — 發票、客戶、支出、收據、PDF 匯出 — 另加課堂日曆，適合經營課程、班別或堂數的生意。為客戶開立套票、於日曆安排課堂，再開立正式發票。
A package is billed in one month — its invoice date's month, or its first class's. "Bill" turns it into a real invoice with a number and a PDF. 每張套票只計入一個月份 — 「開單日期」所屬月份，或第一堂所屬月份。按「開發票」即可轉為正式發票，附編號及 PDF。
Customers whose packages have all finished with nothing booked next. They stay here until you archive them. 套票已完結、但未再報名的客戶。除非你封存，否則會一直留在此清單。