Custom Sidebar for Portfolio Categories

Hi,

I want to change the content of the portfolio category pages.
I am using a child theme.

I have seen in wp-content/themes/enfold/enfold/taxonomy-portfolio_entries.php that you call
get_sidebar('portfolio');
So I tried registering a sidebar called ‘portfolio’ in the child functions.php like so:

# Add an editable sidebar for Portfolio
add_action( 'widgets_init', 'portfolio_register_sidebar' );
function portfolio_register_sidebar(){
  register_sidebar(array(
  'name' => 'Portfolio sidebar',
  'id' => 'portfolio',
  'description' => 'Sidebar for Portfolio',
  'before_widget' => '<aside id="%1$s" class="widget group %2$s">',
  'after_widget' => '</aside>',
  'before_title' => '<h3 class="widget-title">',
  'after_title' => '</h3>',
  ));
 }

Then in the widgets area, I added some custom HTML stuff, but I still get the standard sidebar with pages, categories and archives.

Please point me in the right direction.

Thanks,

John