QuickBooks has a feature called Reminders that helps you keep track of everything that needs to be done. You can be reminded of bills to pay, checks and other forms to print, customers who are late with their payments, money waiting to be deposited, and you can even be reminded of your brother's birthday. Use the Reminders to help organize your tasks. By setting certain preferences, the Reminders feature will behave just the way you want it to.
Set Personal Reminders Preferences
Set Company Reminders Preferences