When you use Chapters and choose a chapter point, the DVD will start there and then go straight through to the end of the workout. When you use Mix & Match and choose a chapter point, it will play that chapter, then go back to the Mix & Match menu to choose another chapter. So Chapters is good if you want to start partway through the workout, and Mix & Match is good if you want to stop between segments to choose each segment.
Hope that helps.
[font face="palatino linotype" font color=purple font size=+1]***Lainie***