Hello,
I saw the screenshot you attached. Sorry but there is no option in Theme Settings for that. Because the products are WooCommerce functionality and our theme doesn’t influence.
You can try adding the following Custom CSS code in the Global Custom CSS area under Theme Settings >> Custom CSS.
.product-template-default.single.single-product.postid-49 .product-image-summary .cart {
display: none;
}
Note: The above CSS will hide the add to cart and quantity button from the product whose id will be “49” and it will hide it from the single product page only it will not work for the shop page.
You can set the product id according to your needs.
Best Regards.