Question about menu system in iDVD.

I'm using the final version of iDVD. I'm having a problem with the disc menu system as it relates to chapter markers.

When the disk is inserted, I like to have two menu choices. At the top “Play Movie” under that I want “Scene Selections". When the disc is inserted, I would like to have “Play Movie” be the default choice.

When I use iDVD to create chapter markers, it adds an extra step every time. You have to select the name of the movie, and then you get to the choices I just described. (Those choices are always perfect.)

It's easy to remove the name of the movie (first button) using “Smart Delete" when looking at the button map. But when doing this, it reverses the default choice on the following screen.

It will usually default to “Scene Selections”. It's easy to see this in the button map. I've tried everything I can think of to get it to work the way I want. I will undo Smart Delete and then do it again, if I repeat this enough times, eventually it will come up the way I want it. Sometimes dragging the button I don't want into the trash and then undoing that, and then doing Smart Delete again will fix the problem. It all seems rather random. I don't know how to make this software do what I want.