Either drag/drop a scene from the video (click on the video in assets, and then fast-forward through the video to a scene you like), or click on the text icon and type in the name of the video/chapter stop.
After doing this, right-click on the video or text, and create a link to the actual video. Do this for each chapter. If you need more pages, create a link to the second page the same way (and create a link on the second page that comes back to the first.)
"What do you mean with menu cells? Do you mean a motion menu with buttons displaying the different scenes?"
Yeah, I'm not sure what this means, either. Can you explain what you want to have happen on the menu screen?