1. Navigate to Setup→Company Info.
  2. In the integrations section, click on the QuickBooks logo. 
  3. You will be prompted to log into your QuickBooks Online account. Enter your credentials, and submit.
  4. Next you will be warned that you are giving Brew Ninja permission to access data in QuickBooks.
  5. Click on authorize.
  6. You will be taken to the QuickBooks configuration page.