Problem:
The issue here is that the user wanted to auto assign their post title based on the custom field values on their Post Form.

Solution:
This can be done by using the code below. Add the following to your Toolset custom code settings at Toolset->Settings->Custom Code. Once you've done this please ensure that you've activated it as well as change the ID 123 to the ID of your view.

add_action('cred_save_data','func_custom_post_title',10,2);
function func_custom_post_title($post_id,$form_data) {
if ($form_data['id']==123) {
$field_1 = $_POST['wpcf-field-slug-1'];
$field_2 = $_POST['wpcf-field-slug-2'];
$args = array('ID' => $post_id, 'post_title' => $field_1.' '.$field_2);
wp_update_post($args);
}
}

The above is a basic method on how to update the post title.

Problem:

I added a function that I found from the Toolset support forums and I'm wondering if you can help me with 2 things:

1. Show Download Count per file

2. Show file size per file

Solution:

There isn't such kind of built-in feature within Toolset plugins, you might consider other plugins, for example:

https://wordpress.org/plugins/search/download/

Relevant Documentation: