When one of my video clips ends, I want the the next item (clip) on the menu to be highlighted. When someone views that clip and it returns to the menu again, I want the third item in the list to be highlighted, and so on.
Double click on the menu button for the each video clip. Click on "End Action" under Media Properties on the right. Click on Destination then click on the down arrow and select your menu. Click on Destination Button then click on the down arrow and select the button you want to highlight on return after playing that video. Repeat is for each one of your buttons. HTH