To integrate the "Add to Wishlist" button please go to your Shopify admin panel > Themes > Edit HTML/CSS > product.liquid and add this code where you want to show Add to Wishlist button:

{% capture the_snippet_fave %}{% render 'socialshopwave-widget-fave' %}{% endcapture %}
{% unless the_snippet_fave contains 'Liquid error' %}
 {{ the_snippet_fave }}
{% endunless %}

In our example, we put our code after this code:

<button type="submit" name="add" id="add" class="btn">
<span id="addText">{{ 'products.product.add_to_cart' | t }}</span>
</button>

This is how the Wishlist Button looks on the product page.

Save changes and check them on your site. Or contact us to get professional installation on your site for free.