Ok I see.
Well, I don't think that is possible 'out of the box', but first of all I would set those less important pages to 'not appear in menu'.
If it's only five pages you might want to hardcode them in your template. Otherwise you might think of creating some special method for it on your page/pagecontroller (page.php) or the pages that extend them.
Can't think of something out of my head now, but it can't be too hard...