Second Level Categories Not Showing

Hi I am new to open cart and have installed version 1.5

After getting the import export function up and running I ran a few basic uploads which worked fine. I have now uploaded a new category list however only the top level displays. I have checked the data sheet and believe this to be in order.
Top level categories display fine and when checking the admin back end I can see the categories have been created and are active. I did wonder whether it was because there were no products in the categories so added one. I can see this as an uploaded product but cannot find it

I hope this makes sense
the testing ground is located at

http://www.kitchenspreston.co.uk/openstore/

I have the top level working and secondary categories now working but need an additional level. How do I configure this through the menu

It would need code modifying as this isn't the default for OC

Please search the forums as this has been discussed before.