Hi Drew,

Are you looking to add a field that can be edited by each vendor for their own products?

Here is an example:

1) I created a text field in ACF named 'productcolor':

2) I added this PHP code snippet to the site:

add_action('marketking_extend_page', function($pageid){
    ?>
    <div id="marketking_footer_hidden">
        <?php
        wp_footer();
        ?>
    </div>
    <?php
});
add_filter('marketking_css_queue', function($q){
    $new_items = array('acf-global','acf-input','acf-pro-input','acf-datepicker','acf-timepicker','tinymce','tinymce-root');
    $q = array_merge($q, $new_items);
    return $q;
}, 10, 1);
add_filter('marketking_js_queue', function($q){
    $new_items = array('acf-global','acf-input','acf-pro-input','acf-datepicker','acf-timepicker','acf-color-picker-alpha','tinymce','tinymce-root');
    $q = array_merge($q, $new_items);
    return $q;
}, 10, 1);
add_action('marketking_after_save_product', function($product_id, $vendor_id){
    do_action( 'acf/save_post', $product_id );
}, 10, 2);
add_action( 'marketking_edit_product_after_tags', function($post){
    acf_form_head();
    ?>
    <div class="col-xxl-12 col-md-12 marketking_card_gal_cat_tags" style="background: white; padding:20px;border-radius: 4px;">
        <?php
            $product_id = $post->ID;
            acf_form(array(
                'fields' => array('productcolor'),
                'form' => false,
                'post_id' => $product_id,
            )); 
        ?>
    </div>
    <?php
    
});

Most of the snippet is just enqueuing the necessary ACF scripts. At the very end you can see we name the 'productcolor' field.

3) The field is now available and editable by each vendor:

Kind regards,

Stefan