The number of seats in the dropdown menu for 'How Many Tickets' can be set on a per-production basis. 


To change the default number of seats in the dropdown menu here: 



In the Desktop Administration Module > Production > Edit Productions > Select Production > Web Tab and in the Max. Seats/Patron field enter the desired default number. If this field is empty then the dropdown will default to 12. 


Note: By entering a number in this Max. Seats/Patron field, you will limit the number of seats a patron is allowed to purchase for the production. If you entered 20, a patron will only be able to purchase 20 seats to the production in total.



To change the number of seats here:



See this article:  


How many tickets? Please enter how many tickets you would like to book - How to change the default number of seats