Hi JC,
You can backup & edit this head block of template:
[root_folder]/templates/ja_morgan/tpls/blocks/head.php
Add the following PHP block to the end of this file:
<?php
$app = JFactory::getApplication();
$menu = $app->getMenu();
$active = $menu->getActive();
if ($menu->getActive() == $menu->getDefault()) {
// Only show on homepage
?>
<script type="application/ld+json">
{
"@context": "https://schema.org",
"@type": "Organization",
"name": "Your Site Name",
"url": "https://yoursite.com",
"logo": "https://yoursite.com/logo.png"
// your full schema code here
}
</script>
<?php
}
?>
and change the schema info as you wish.
This way will help to inject schema into the <head> only on the homepage.