You can set certain default parameters for printing customer statements. For example, you might not want to print statements for customers with zero balances or credit balances or balances less than a certain amount or barely overdue. You can set all these options in the Statements/Invoices Defaults (accessed from the Maintain menu).
You can also define dunning messages that appear on statements. Sage 50 places the message based on the number of days the oldest invoice is overdue. In other words, you can define a message for invoices 30 days overdue, a different message for invoices 45 days overdue, and so on.