Unison
Unison plays several copies of one note. On Heisenberg, Unisono is the count, Detune is the pitch gap in semitones, and Spread places the copies left and right.
Unison plays several copies of one note. Detune pulls the pitches apart. Spread places the copies left and right.
On Heisenberg, Unisono is the number of copies. Above 1 you get more than the single oscillator. Detune is the gap between them, in semitones. Spread is the stereo width: 0 keeps the stack in the center, and positive or negative values push it to one side.
Keep the gap small if you still want one note. A semitone is already an interval you can hear against the rest of the track. For a milder thickening, detune a second oscillator by cents, as described under pitch.
A copy an octave up is a different control: a second oscillator, transposed by 12 semitones. Pan then places the whole stack. Spread is the width inside it. If pan and spread are both pushed hard to one side, that width collapses toward the speaker.