How to limit features when vendors load products

-- url of the page with the problem -- : 72.249.53.79/~thamoufnew/index.php/home-...d-music/product/add#
-- HikaShop version -- : 2.5.0
-- HikaMarket version -- : 1.6.5
-- Joomla version -- : 3.4.3
-- PHP version -- : 5.3.29
-- Browser(s) name and version -- : Chrome 45.0.2454.93

Dear Support

I am building site to sell mp3s thus many product features I don't need my vendors to worry about like size, etc.

What do I need to do to remove these off of their add product page?

In attached image I show some of the ones I do not need.

I tried to find this in the views, but could not.

Thanks.