To: cjh
Hello,
To add more than 6 chapters, you can create an absolutely new custom project and create as much chapters as you want. For more information, please follow that 
link to AVS4YOU Online Help.
But for your convenience we've just created new presets with 7,8 and 9 chapters. That will be included into the new version.
At the moment, you can download that presets (see the attachment) and use them.
So, please:
1. download the latest version of 
AVS DVD Authoring
2. download the New Page Layouts attachment 
3. place 
the xml files from the attachment (not the folder) to the folder AVSDVDAuthoring\Presets\Page 
     by default that is located:  C:\Program Files\AVS4YOU\AVSDVDAuthoring\Presets\Page
4. run the software. There will appear presets for 7,8 and 9 chapters.
Please, inform us about the results.