How do you combine canvases in p5j weather you overlap or organise them

[octaminotin]

i got this

{dot.operator
function setup() {
  createCanvas(400, 500);
}

function draw() {
<iframe1>background(220);
}

{dot.operator
function setup() {
  createCanvas(400, 400);
}

function draw() {
<iframe2>background(320);
  }