Installation Scripts Template header script Highlight and copy the template header script to your clipboard. Navigate to Storefront > My Themes In the Advanced Options section, click Edit HTML/CSS and choose the file labeled HTMLHead.html. Paste the template header script just after the existing code. Save, close and refresh to update your file. Template footer script Highlight and copy the template footer script to your clipboard. Navigate to Storefront > My Themes In the Advanced Options section, click Edit HTML/CSS and choose the file labeled footer.html. Paste the template footer script just after the existing code. Save, close and refresh to update your file. Validate Script Installation