Is it possible to have a single note with both stem directions. This is would needed in parts where both voices play the same note at the same time.
~Pam
Yes, indeed. Place the note, then place a second note at the same pitch, just as if you were making a chord. (CTRL+ENTER)
Sure, just add the second (identical) note as you would a chord member: place cursor next to the existing note - then (Ctl + <Enter>). The result will be exactly as you described.
... and it even works with whole notes - you get two side by side, just like you should do.