1. Login to Unify Desktop Application and Go To File>>Manage>> Edit Connection>> Accounting Software Settings.
2. Need to Select QuickBooks Online (US) from the drop down of Accounting Software Version. Then Click on Connect To QuickBooks.
3. To authorize Unify, simply log in to your QuickBooks account by entering your email address and password.
4. Click Authorize.
5. Once authorized, you will automatically be redirected back to Unify.