“wpc_after_receiver_details_metabox” is an action that allows you to add custom fields in the receiver details section.
Copy and paste the following code in your current theme’s function.php
function my_custom_receiver_meta($post_ID){ ?>
<tr>
<th><label>
<?php esc_html_e('Company Name','wpcargo'); ?>
</label></th>
<td><input type="text" id="wpcargo_company_name" name="wpcargo_company_name" value="<?php echo esc_html( get_post_meta($post_ID, 'wpcargo_company_name', true) ); ?>"size="25" /></td>
</tr>
<tr>
<?php
}
add_action( 'wpc_after_receiver_details_metabox', 'my_custom_receiver_meta', 99 );
Screenshot:
