Go to your GoDaddy Product Page
Scroll to Websites + Marketing and select Manage next to your website to open your site
Select Edit Website or Edit Site to open your website builder
Go to the page and location you want to add your custom code, and add a section
Search for the HTML section and select Add.
Paste or write your custom code into the Custom Code field.
Your changes are saved automatically. Use Preview to see the results and when you're ready to make the changes public, publish your site.
// Your "Harness your Website" Code
<script>
!function(t,e){var a=document.head,n=document.createElement("script");n.type="text/javascript",n.src="http://widget.staging.harnessapp.com/harness-widget-v2.js",n.onreadystatechange=e,n.onload=e,a.appendChild(n)}(0,function(){window.HarnessWidget.init({charity_id:"cmn"})});
</script>
1) COPY the "Harness your Website" Code
2) PASTE the Code on your Website
Either in the </footer>, </header> or on each </page>
... and that's it!