Multisite copy table into child blog

Hello,

I am running multisite and I am using marketpress plugin for ecommerce store. I have enabled this plugin as Network Enable so that all of my child blog can get access of this plugin by default. But I want to make something limited access of that plugin.

Exactly what I want is that, all of my child blogs will get all products that I have added ( or will add in future ) so that my store will be shown in all child blogs and no one except me would be able to add or remove products.

Can anyone suggests me how do I do that?

Thanks
Saikat