Resolved ...
I already read/viewed "Getting Started", "Creating Hip & Gable Roofs Manually", "Using Gable Roof Line Tool", "Advanced Roof Design", "Preferences and Defaults" etc. before coming to this forum. Documentation and videos helped me successfully build a Clerestory Roof (there are two manual ways) plus assistance from this forum helped me tie a porch gable roof to the clerestory roof. I know the value of good resources. Anyhow, out of exasperation, I started playing with the roof planes, wall heights, rail specs, etc. and resolved the interior wall problem. Unfortunately, I'm unable to share what I did as a tip because there was no order to what I did. Trial and error.
I'm a retired Senior Systems Analyst so logic and complex systems are not new to me. Seems my daughter's request for me to design her new home is presenting me with a new challenge. Don't worry, we have an architect that will review our plans and make changes if needed.