Hi Stewart,
Your question has nothing to do with the Lesson module.
What do you call a "sub-page"? I suppose you mean a course on your moodle site.
I do not understand what you mean with "archive". Do you mean that you want those quizzes to be no longer available/visible to your students on the front page? If so, why don't you simple "hide" them?
I'd advise you to re-post this post to the General Problems forum on moodle.org and to re-state your problem using "moodle-speak" terminology.
Cheers,
Joseph