Getting Started How To Set Up Invoice Due Date Estimated reading: 1 minute 475 views In your top right hand corner, click your name.A dropdown will open up and you may click “My Company”. 3. On your company page, go to the “System Configuration” tab 4. In the System Configuration section, key in the number of days you wish to trigger the following events.Invoice Overdue After X daysUnpaid invoice will flag to Overdue after x day(s). Set it to 0 if you do not wish to activate this feature. 5. Once satisfied with the information keyed in, scroll down to click “Submit”