How to add a new componetGroup in the policies' .content.xml under crxde lite in AEM6.3?

[BigT168]

Using AEM 6.3, want to add one more componentGroup in the components property so template author can see these new components. The file name is .content.xml under the /conf/myapp/settings/wcm/policies, but I don't know how to add the new componentGroup using crxde lite? 

Here is a piece of  .content.mxl file under the /settings/wcm/policies: 

<?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" xmlns:rep="internal"
    jcr:mixinTypes="[rep:AccessControllable]"
    jcr:primaryType="cq:Page">
    <rep:policy/>
    <wcm jcr:primaryType="nt:unstructured">
        <foundation jcr:primaryType="nt:unstructured">
            <components jcr:primaryType="nt:unstructured">
                <responsivegrid jcr:primaryType="nt:unstructured">
                    <myapp-default
                        jcr:description="Default policy for editable layout containers"
                        jcr:primaryType="nt:unstructured"
                        jcr:title="Nextgen Touch Default"
                        sling:resourceType="wcm/core/components/policy/policy"
                        components="[group:ACS Commons, group:Social,group:General]"
                        policyResourceType="wcm/foundation/components/responsivegrid">

Thanks

[smacdonald2008 · Accepted solution]

For editable templates, you add component groups using the user interface in the Template editor. See this article: https://helpx.adobe.com/experience-manager/using/aem_lazybones.html