title: Highcharts: are multiple legends possible?
body: <p>I'm new to Highcharts and it seems excellent this far. However, I need to have my six series grouped into three columns in the legend. This can be achieved by limiting legend width and using <code>legendIndex</code>. Config snippet of this in Coffeescript:</p>
  
  <pre><code>  legend:
      # 3 items side-by-side with some margins
      itemWidth: Math.floor(config.width / 3.8)
    series: [
        # top left
        legendIndex: 1
        ...
      ,
        # bottom left
        legendIndex: 4
        ...
      ...  # 4 more series; other columns in indices 2,5 and 3,6
      ]
  </code></pre>
  
  <p><strong>The problem</strong> is, I also need a separate title for each group. So something like this (ascii art):</p>
  
  <pre><code>Title A               Title B                 Title C
  [ ] Item A1           [ ] Item B1             [ ] Item C1
  [ ] Item A2           [ ] Item B2             [ ] Item C2
  </code></pre>
  
  <p>Note that I need the export functionality as well, so HTML positioning is not possible as I understand it. How can I make my legend look like this?</p>