event video: how to create "internal bookmarks"

Dear all,

Is there anyway to do the following with an event video placed in one slide?:

For the student (at run time) to place "sensitive points (I could name them "bookmarks")" within an event video and:

a) jump directly to them (without having to watch the previous part of the video sequentially)

b) link them and manage a comment (or any other Captivate run time interaction) so to see, manage the comment (or each time the video reaches that bookmark

c) link to them an object of the slide

Thanks