could you tell me why some of the boxes in the flowchart are grayed out.
You have the end action of a menu set to itself. Normally, you leave a menu end action set to "stop." The exception is when you want to let the menu end after an amount of time or motion menu loops and then go on to another menu or movie.
1) When pressing the Menu button in the remote I want it to start playing from the INTRO (not the MENU).
Select the timeline you will be in (or all of them). Set the menu remote to the intro movie.
2) When one is half way thru watching the video is there a button one can set up to take the viewer back to the MENU?
(I do have chapters to navigate forward and backward in the video but thought maybe this is possible. If not I just forget it.)
Same answer here. You cannot set a button on a menu while a timeline is playing (in blueray this would be a popup). But you can set the menu remote.