How to add multiple check-boxes to one section in touch UI dialog

Hi Sandhya,

You can create the dialog as below to get the nearest as per your requirement.

Dialog xml:

<?xml version="1.0" encoding="UTF-8"?>
<jcr:root xmlns:sling="http://sling.apache.org/jcr/sling/1.0" xmlns:cq="http://www.day.com/jcr/cq/1.0" xmlns:jcr="http://www.jcp.org/jcr/1.0" xmlns:nt="http://www.jcp.org/jcr/nt/1.0"
    jcr:primaryType="nt:unstructured"
    jcr:title="Properties"
    sling:resourceType="cq/gui/components/authoring/dialog">
    <content
        jcr:primaryType="nt:unstructured"
        sling:resourceType="granite/ui/components/foundation/container">
        <layout
            jcr:primaryType="nt:unstructured"
            sling:resourceType="granite/ui/components/foundation/layouts/fixedcolumns"/>
        <items jcr:primaryType="nt:unstructured">
            <column
                jcr:primaryType="nt:unstructured"
                sling:resourceType="granite/ui/components/foundation/container">
                <items jcr:primaryType="nt:unstructured">
                    <heading
                        jcr:primaryType="nt:unstructured"
                        sling:resourceType="granite/ui/components/foundation/form/textfield"
                        fieldDescription="Please provide page Heading"
                        fieldLabel="Page Heading"
                        name="./partnerHeading"/>
                    <description
                        jcr:primaryType="nt:unstructured"
                        sling:resourceType="granite/ui/components/foundation/form/textarea"
                        fieldDescription="Please provide page description"
                        fieldLabel="Page Description"
                        name="./partnerDescription"/>
                    <container
                        jcr:primaryType="nt:unstructured"
                        sling:resourceType="granite/ui/components/foundation/container">
                        <layout
                            jcr:primaryType="nt:unstructured"
                            sling:resourceType="granite/ui/components/foundation/layouts/fixedcolumns"
                            maximized="{Boolean}false"/>
                        <items jcr:primaryType="nt:unstructured">
                            <column1
                                jcr:primaryType="nt:unstructured"
                                sling:resourceType="granite/ui/components/foundation/container"
                                class="custom-section">
                                <items jcr:primaryType="nt:unstructured">
                                    <text
                                        jcr:primaryType="nt:unstructured"
                                        sling:resourceType="granite/ui/components/foundation/heading"
                                        level="2"
                                        text="LOCATION"/>
                                </items>
                            </column1>
                            <column2
                                jcr:primaryType="nt:unstructured"
                                sling:resourceType="granite/ui/components/foundation/container"
                                class="custom-section">
                                <items jcr:primaryType="nt:unstructured">
                                    <location1
                                        jcr:primaryType="nt:unstructured"
                                        sling:resourceType="granite/ui/components/foundation/form/checkbox"
                                        name="./location1"
                                        text="Location1"
                                        value="location1"/>
                                    <location2
                                        jcr:primaryType="nt:unstructured"
                                        sling:resourceType="granite/ui/components/foundation/form/checkbox"
                                        name="./location2"
                                        text="Location2"
                                        value="location1"/>
                                    <all
                                        jcr:primaryType="nt:unstructured"
                                        sling:resourceType="granite/ui/components/foundation/form/checkbox"
                                        name="./all"
                                        text="All"
                                        value="all"/>
                                </items>
                            </column2>
                        </items>
                    </container>
                </items>
            </column>
        </items>
    </content>
</jcr:root>

Create a clientlib in the same component with category as cq.authoring.dialog and add following CSS to it.

.coral-FixedColumn-column.custom-section {
    float: left;
    width: 45%;
}
.coral-FixedColumn-column h2 {
    margin:0;
}

It would look something like below image:

Let me know if you have any queries.