A system and method for defining and presenting a presentation, e.g., a televised weather report presentation, including a plurality of computer or other generated scenes in which a live on-screen presenter appears as part of the presentation and controls scene sequence and timing in a non-linear manner. A plurality of launch areas are defined for scenes of the presentation. Each launch area has associated therewith a destination scene and, preferably, an indicator icon. During the presentation the location of a pointing element controlled by the on-screen presenter, e.g., the presenter's hand, is tracked, and the indicator icon displayed when the pointing element is moved into a position in space corresponding to a defined launch area. With the pointing element thus positioned, the on-screen presenter operates a communication device to indicate that a new scene corresponding to the launch area is to be displayed.