Hi,
Since there was not enough space; we didn't include custom-fields on GridView & MultiGridView.. We did it only for ListView. (there is a limitation though..Child-product based custom-fields won't work on Category page. So; only simple custom-fields (Image, String, Date etc..) are OK! to display on category page.
If you want to display the custom-field on GridView as well (the same custom-field types that are currently being displayed on ListView); custom coding modifications on category page PHP file is required. Unfortunately we don't provide free support or step-by-step instructions for custom coding modifications.
You may purchase premium support:
www.flexiblewebdesign.com/premium-support
and let us take care this coding modification for you directly on your website though.
Regards.
Support