Hi,
Yes, now my links looks like: http://example.com/portfolio_entries/category1/subcategory1

Marcin

Thanks for your replay Rikard.

Setting a custom base changing only “portfolio_entries” name in link:
http://example.com/portfolio_entries/subcategory1.
To set hierarchical links, like
http://example.com/portfolio_entries/category1/subcategory1
I had to properly edit register_portfolio.php file in theme category.

Regards,
Marcin