Every Total grid module for the page builder includes filters for each "section" so you can customize the output. For example if you insert the Post Type Grid there is a filter applied to the featured image, title, excerpt, button...etc. This way you can either override the current output or you can add additional content before/after it. This filter takes in the list of module arguments as well so if you want to target a specific grid you can give the grid a unique ID and then check that way. Have a look at the sample snippet below for adding extra content under the title for a post type grid with the unique ID of "my-custom-grid"
// Add extra content under the title for a Post Types Grid with a
// unique ID of "my-custom-grid"
add_filter( 'vcex_post_type_grid_title', function( $output, $atts ) {
if ( isset( $atts['unique_id'] ) && 'my-custom-grid' == $atts['unique_id'] ) {
$output = $output . '<div class="new-grid-section">Some stuff here</div>';
}
return $output;
}, 10, 2 );