Stop & Start

for (let i = 0; i < 5; i++) {
    canvas.node(i).add({ pos: [(i - 2) * 50, 20] })
    canvas.node(i + 5).add({ pos: [(i - 2) * 50, -20] })
    if (i > 0) {
        canvas.edge([i - 1, i]).add()
        canvas.edge([i + 4, i + 5]).add()
    }
}

for (let i = 0; i < 4; i++) {
  canvas.withQ('q1').pause(0.5)
      .edge([i, i + 1]).traverse('red')
  canvas.withQ('q2').pause(0.5)
      .edge([i + 5, i + 6]).traverse('green')
}

// Stop
canvas.pause(1)
canvas.withQ().queue('q1').stop()

canvas.pause(1)
canvas.withQ().queue('q2').stop()

// Start
canvas.withQ().queue('q1').start()
canvas.withQ().pause(1).queue('q2').start()