[Solved]-Highcharts - Display Stack Label-Highcharts

there are many examples about highcharts groupped categories

example1

example2

example3

define categories

xaxis: [{
    categories: ['australia', 'germany', 'australia', 'germany'],

assing category to group

data: [['group1', 20],['group1',30],['group2', 35],['group2', 25]]
},

refer this link:

highcharts column labels

see the categories part in the fiddle below they have show the very good example of what you need:

demo

use this

xaxis: {
    categories: ["location a","location b","location c"],
    title: {
        text: "location"

    }
},

or this

xaxis: [{
categories: [{
name: 'fruits'
children: ['orange', 'mango']
},{
name: 'birds'
children: ['eagle', 'parrot']
}]
}]

hope this might help you.