В файл productscategory.tpl
{if ($categoryProduct.id_product_attribute == 0 OR (isset($add_prod_display) AND ($add_prod_display == 1))) AND $categoryProduct.available_for_order AND !isset($restricted_country_mode) AND $categoryProduct.minimal_quantity == 1 AND $categoryProduct.customizable != 2 AND !$PS_CATALOG_MODE}
{if ($categoryProduct.quantity > 0 OR $categoryProduct.allow_oosp)}
<a class="exclusive ajax_add_to_cart_button" rel="ajax_id_product_{$categoryProduct.id_product}" href="{$link->getPageLink('cart')|escape:'html'}?qty=1&id_product={$categoryProduct.id_product}&token={$static_token}&add" title="{l s='Add to cart' mod='homefeatured'}">{l s='Add to cart' mod='homefeatured'}</a>
{else}
<span class="exclusive">{l s='Add to cart' mod='homefeatured'}</span>
{/if}
{else}
<div style="height:23px;"></div>
{/if}