How to get tree structure on different products?

Is it possible to get a tree structure under product groups?

I would like that it shouls look like this.

Products

+Product group1
----Manufactor1
----Manufactor2
----Manufactor3
+Product group2
----Manufactor4
----Manufactor5
+Product group3
+Product group4

ect.

The manufactor list should open when you click the product group. And when you click the manufactor the list of products would open on the main pane.


Within "Products -->

Within "Products --> Products --> Products" highlight the "Product Group1" group you wish to add another branch to and click "New" from the buttons on the top...not "New Tree" and rename as required.

Remember you will have to add each product to the "Product Group1" group list and the "Manufacture" group list so your customers don't think the groups lists are empty.

Thanks

Thanks, this worked.