Insert Drawing Objects in to Instance Movies
Send an instance to the Movie Organiser or Sorter, select instance edit, find a point to split the instance, then select Edit > Split instance edit + new drawing row. Draw on the clip using the Drawing Window, then click the Organiser or Sorter button in the drawing menu bar to send your drawing clip to the Movie Organizer or Sorter. When you then make a movie from the Organiser or Sorter the clip will play, pause for the drawing, then continue to play.