Displaying child products inside the parent product

[s209096300]

Hi,

I have a parent product and 3 child products under each parent product ...

My goal is to display the parent product on the category view and once you click on the product details button it must display the child products inside the parent product ...

I'm just a little bit confused at the moment i have created the parent product , create 3 child products inside the parent product, but if I display the parent product the child product doesn't display inside the parent product

Any steps I can take in order to display the child product inside the parent product ??