The form allow to edit terms for selected film and cinema.
Select: Film, Cinema.
Enter: term values for every week from 1 to 9, and last number for all other weeks.
Note: New values in terms will not affect existing invoices because when invoice is created – it takes term value from the terms table, and store it in 'invoices' table. If you want to change terms in the existing invoice – you should use the form Fix invoice.
Update at Mar-2011: Now the form allow only predefined set of terms that controlled by admin.
Current known set is: 30, 35, 40, 45, 50.