Well, re-read the section titled APPENDIX in the reference provided in post #6 above and follow those directions.

I used one of my files as a test that employs both sections/chapters and appendices and followed those instructions. In doing so, I ended up with the Navigation Pane following the format of the TOC (less pagination data). When I created that file, as I previously mentioned, I followed the instructions of http://shaunakelly.com/word/numberin...ppendixes.html using Headings 1 - 5 for my basic document and Headings 7-9 for the appendicies. Both Heading 1 and Heading 7 were set at TOC Level 1.

If none of this is helpful, then I will take a side seat and hopefully, another user who may understand more fully will help you.