Action hook for top area  .item wrapper on the post grid loop,

See the code sample here.

add_action('post_grid_item_top', 'post_grid_item_top', 10, 2);

function post_grid_item_top($grid_id, $item_post_id){
    $post_id = get_the_id();
    ?>
    <div class="">Content at top item wrapper</div>
    <?php
}

there is 2 parameter  $grid_id, $item_post_id

 

Screenshot: Please see the screenshot where the content will display.

Post Grid Plugin post_grid_item_top