My apologies if I’m missing something obvious, but I’ve tried all the search terms I can think of in both this forum and the D4 manual…
How do you create the double (side-by-side) noteheads that are common when instruments like the guitar play the same unison pitch on two different strings?
You should just find that creating two notes of the same pitch in a chord in the same voice will do this. What result are you getting instead?
Ah! I’m using MIDI keyboard input. I take it for this scenario, I should use manual chord input?
I believe Chord mode will give you octaves. You can lower the second note down an octave Ctrl-Atl-DnArrow (Mac: Cmd-Opt-DnArrow). Or, you can use the Interval popover Shft-I and input a 1.