Child products on product detail

[karckash]

Good Day,

in a past year i got VM 1.1 with joomla 1.5, and in the configuration product have a tab called "Display Options" and in the product details page appears all child products of this one using params on this tab, But.. i can see the option or how to display child products on VM 2.0.20a

any body could help me.

the produt detail page is similar to this http://youtu.be/CS3khvm3gQc?t=40s

and the configuration option in VM is http://youtu.be/CS3khvm3gQc?t=4m23s