Clicking the Patrons button for a performance lists all of the patrons attending that performance:

The list can be sorted by any of the columns. Here, the list has been sorted by the number of seats in each sale (Count):

Notice the ^ or v symbol on each column when it is clicked to indicate the direction of the sort. Click again to reverse the order.

A useful column to sort on is Unpaid:

This can put all the sales with unpaid tickets at the top of the list. Double-click on a sale to bring up the Sale window and the patron’s contact information.