Profile: a.R

Problem:

The issue here is that the customer wanted to add certain additional information to his custom fields whenever a CRED form is submitted. In this case the customer wanted to do it with his Author ID and Name

Solution:

What you can do is to create 2 custom field in Types and then use this hook to automatically populate those fields.

Create the custom fields with the slug author_id and author_name

add_action('cred_save_data', 'set_author',10,2);
function set_author($post_id, $form_data)
{
$current_user = wp_get_current_user();
// if a specific form
if ($form_data['id']==12)
{
update_post_meta( $post_id, 'wpcf-author_id', $current_user->ID);
update_post_meta( $post_id, 'wpcf-author_name', $current_user->user_firstname);
}
}

Change the id 12 to the ID of your specific CRED form and this should allow you to automatically populate the fields.