Show Cue System

Currently with audio file cues, you can type in the start and end points, and SCS calculates and displays the play length. However, most of the time, what I get for a music cue from the director is the start point and duration, so it would be good if I could just type the duration in and have SCS set the end time. Ideally it should be possible to enter any two of the three values and have SCS calculate and set the third.

Thanks.