The method to set a Playback action appears quite complicated for many of my course attendees to grasp (setting the Artboard handle as a Timed animation with a Speech action) and definitely too difficult to discover. It even gets worse when they try to understand why to drag the handle from destination to source (as indicated in many Help files). Why not tell users to simply click the stub to invoke the heads-up display and get that initial confusion out of the way ?