Category page questions

Hi,

I'm using MarketPress for the first time in a project.

I have added in a couple of sample products and then assigned them to a Category. When I view the Category page only 1 of my products shows up which I'm not sure why? Please see this link:

http://www.whydidibother.com/bbstorepreview/store/products/category/scoot/

I would also like to be able to display the products in a grid format within the Category page. I have installed the MarketPress Product Grid Shortcode plugin, but not sure how to get that into a Category page?

Many thanks