[Plugin: Platinum SEO Pack] Hide meta_box for Platinium Seo ?

Hello,

for my contributors i want to hide Platinium seo (meta_box) when they write a post but not for me (admin).

I try to change with functions.php since 3 days… but i’m not very good in php…

Have you an idea ?

Thanks for your help,

Regards

Benoist

http://wordpress.org/extend/plugins/platinum-seo-pack/