He creado un embudo con el siguiente script.

 Highcharts.chart('container', { chart: { type: 'funnel' }, title: { text: 'Sales funnel' }, plotOptions: { series: { dataLabels: { enabled: true, format: "Sales Chart:<br>{point.name}<br>Cart: {point.value:,.0f}<br>New Users: {point.unique:,.0f}<br>Total Orders Rate: {point.cr}%", softConnector: true, inside: true, }, neckHeight: "0%", neckWidth: "80%", width: '15%', reversed: true, } }, legend: { enabled: false }, series: [{ name: 'Unique users', keys: ["name", "y", "value", "unique", "did", "cr"], data: [ ['Website visits', 1, 659, 541, '1', '1.31'], ['Downloads', 1, 392, 288, '38', '0.70'], ['Requested price list', 1, 562, 467, '101', '1.13'], ['Invoice sent', 1, 338, 282, '97', '0.68' ], ['Finalized', 1, 77, 59, '25', '0.14' ] ] }], });

jsfiddle: https://jsfiddle.net/kiranuk/xhfbyj64/

La banda parece abarrotada. ¿Cómo puedo aumentar la altura de las bandas?

Gracias por la ayuda.