To generate billing statements for printing on a bulk/ practice-wide basis,
Go to Billing, and in the Search by Patient tab, select Pts w/ Balances from the All Pt Accounts drop down menu.
In the list that appears, check the ones you want to generate a statement for. To CHECK ALL, check the topmost one, scroll to the bottom of the page and hold down the shift key, then check the bottom box. There at the bottom left, click the link that says Create Statements: