Another issue I saw on this forum, but I just can't understand, is that I have set my DVD, so when a chapter ends, and returns to the main menu, the next proceeding button is highlighted. But, if you don't let the chapter play out, and hit "menu" then when you get to the menu the first button is highlighted all over again
This is because the commands that figure out what the next button is are at the end of the chapter. If you press the menu button on the remote then those command don't execute. It appears that your authoring program then uses button 1 as the one to highlight.
I'm guessing you're using DVD Studio Pro. I'm not sure you can create a script that will make it behave the way you would like.