Good morning JanyRoseB.  Thank you for your response.  I had successfully made a custom Invoice however I would like to add the Account Summary as described in the thread I replied to.  I could not find any of the actions outlined in this thread:  https://quickbooks.intuit.com/community/Help-Articles/Account-Summary-on-an-invoice/td-p/187815

With this text:

If you're referring to the Account Summary feature, it's still there. I'll provide a screenshot so you can easily find it.

Here's how to turn the feature on: 

1. Click the Gear icon.
2. Choose Custom Form Styles.
3. Click Edit to open the template.
4. Click the Content tab.
5. Click the Content area on the right pane.
6. Put a check mark in the Show on invoice field.
7. Click Save and Exit.

Is this available for the 2016 Mac Desktop version?  There is not Gear icon or Custom Form Styles that I can see.  Thank you, Scott