Instrument cues

I am trying to get MuseScore to create cues for another instrument line in a pice that I needed to re-transcribe .

Alto saxophone in this band arrangement has the trumpet cues.

I have split the voices: voice 1 is rests (sax) voice 2 in the trumpet line. I want to make them cues (smaller in size), and i just cannot seem to find an option to do easily do this.

Am I missing something, is "cues" not an option? Many thanks!