I covered this in the last VNC session.
On the edit tab, double click your video clip from the "timeline" (assets in use) bar at the bottom of the screen.
Find the "Add chapters" option in one of the tabs on the left.
Move the dragger underneath the video preview, and then click the + button to add a chapter. The chapter will appear on the film strip on the right side fo the screen.
When you lay out the menu, you can drag those chapters from the right onto an image/icon button, video thumbnail or a text button. It will then link that chapter to that menu item.
I think you can create a video thumbnail by dragging the chapter pic onto the menu. Remember that auto-generated thumbnails will appear 1:1 to the video resolution, so 352x480 will be tall and narrow, while 720x480 will be too long. Resize it to about 4:3 using your eyeballs, make it look "TV shaped" again. (Assuming it's not 16:9 content, and then you'd want to make it "HDTV widescreen" shape).
And that's really all there is.
This has been demonstrated live on your computer, partially in the above video, and in written out text. I just don't know how else to explain or show it.
I hope this time did it.
