I read from the screen and print lead sheet for transposing instruments all the time, and what I do to quickly switch between Bb, Eb, and concert pitch notation is:
- Click the P icon in the toolbar (Practice)
- Click the Tenor Sax, Trumpet, Alto Sax, or concert icon to transpose the notation
- Click 8va or 8vb, if necessary, to move the notation down or up an octave.
- Click the lead sheet icon to see or print the lead sheet