I just follow explainations from Mikes on his Githubs page and hère in this post.
If you want to remote fields in back,
Just remove lines or tag them as comment. For example I don’t wan’t company fields (back and front)
In the fonction.php I did:
function delete_form_fields($fields) {
unset($fields['_company_name']);
unset($fields['_company_website']);
unset($fields['_company_tagline']);
unset($fields['_company_twitter']);
unset($fields['_company_logo']);
return $fields;
}
add_filter('job_manager_job_listing_data_fields', 'delete_form_fields');
Then in my template content-single-job_listing.php (inside the job_manager folder in my theme), I just put corresponding lines in comment tag
<!--
<div class="company" itemscope itemtype="https://data-vocabulary.org/Organization">
<?php the_company_logo(); ?>
<p class="name">
<a class="website" href="<?php echo get_the_company_website(); ?>" itemprop="url"><?php _e( 'Website', 'job_manager' ); ?></a>
<?php the_company_twitter(); ?>
<?php the_company_name( '<strong itemprop="name">', '</strong>' ); ?>
</p>
<?php the_company_tagline( '<p class="tagline">', '</p>' ); ?>
</div>
-->
Hope you can find out how to customize your fields now.