Marketpress: How can I remove attributes of Product Details when creating a new product

Marketpress:
We have setup a multisite for users to add products to their own store, however the products only have one price, and only 1 piece of inventory for each product.

How can I remove attributes of Product Details when creating a new product?
and also disable "add variation"
(i.e Hide Sale Price, SKU, Inventory, Special Tax rate)