There's only one password and you can use it every time you access each month's data, Liftco.
QuickBooks will notify you when you make changes to any transaction under a closed period. You can browse again this link for additional information: Set or change a closing date and closing date password.
Since year-end is fast approaching, I'm adding this article to help you prepare your returns: Year-end checklist for QuickBooks Desktop Payroll. It has a checklist and what other things you need during tax season.
Stay in touch with me if there's anything else I can help you with closing your books. I'll be right here to help you.
