How to add Labels below and above of the highcharts as per below screenshot

Question

please help on how to add laebls in the below scattered charts at all corners but outside polygons

Answer 1

You can use annotations and place them outside plot-area, for example:

    annotations: [{
        animation: false,
        labelOptions: {
            backgroundColor: 'transparent',
            overflow: 'none',
            borderWidth: 0,
            shape: 'rect',
            style: {
                color: '#000'
            }
        },
        labels: [{
            text: 'some text',
            point: {
                x: 10,
                y: -20
            }
        }, {
            text: 'some text2',
            point: {
                x: 10,
                y: 270
            }
        }]
    }]

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Live demo: http://jsfiddle.net/BlackLabel/qm6wd2g5/

API Reference: https://api.highcharts.com/highcharts/annotations