To move Additional Info under Add to Cart, you can use this code to Code Injection > Footer.
<script>
let additionalSection = document.querySelector('.ProductItem-additional');
let cartWrapper = document.querySelector('.sqs-add-to-cart-button-wrapper');
if(additionalSection && cartWrapper) {
cartWrapper.parentNode.insertBefore(additionalSection, cartWrapper.nextSibling);
}
</script>
