Do you mean the the categories tabs as the demo 2? http://venusdemo.com/magento/tattoo/index.php/?___store=store2
The tabs widget we created don’t use function of layer filer in magento. The option “Is Anchor” in category page in magento to use to show layered filter navigation. It not use to filter in extension.
If you want custom the extension as that. Please purchase our service: http://www.venustheme.com/service/
Answer for Tabs show products in subcategories when "is Anchro = yes"