iMovie'08 to 11 are a totally different application with NO relation to iMovie 1 to HD6 at all. It's wrongly named.
The Project window can be set into two lay-outs and You switch by clicking the small blue button top right in this window adjacent to Mark/Chapters
And that's all there is
You can try - FinalCut Pro-X as there is a free demo/try-out and see if You can accept this way.
• iMovie HD6 - or
• FinalCut Pro 6
As they works as I learned to do my movies.
Yours Bengt W