Hey Nyalus!

If you're talking about creating a sidebar exclusivity for use within bbpress pages then here's the process:

1. Open up the functions.php file and head to this section

if(function_exists('register_sidebar')) {
	
	register_sidebar(array('name' => 'Blog Sidebar', 'before_widget' => '<div id="%1$s" class="widget %2$s">','after_widget'  => '</div>', 'before_title'  => '<h4>', 'after_title'   => '</h4>'));
	register_sidebar(array('name' => 'Page Sidebar', 'before_widget' => '<div id="%1$s" class="widget %2$s">','after_widget'  => '</div>', 'before_title'  => '<h4>', 'after_title'   => '</h4>'));
	register_sidebar(array('name' => 'WooCommerce Sidebar', 'before_widget' => '<div id="%1$s" class="widget %2$s">','after_widget'  => '</div>', 'before_title'  => '<h4>', 'after_title'   => '</h4>'))

and change it to:

if(function_exists('register_sidebar')) {
	
	register_sidebar(array('name' => 'Blog Sidebar', 'before_widget' => '<div id="%1$s" class="widget %2$s">','after_widget'  => '</div>', 'before_title'  => '<h4>', 'after_title'   => '</h4>'));
	register_sidebar(array('name' => 'Page Sidebar', 'before_widget' => '<div id="%1$s" class="widget %2$s">','after_widget'  => '</div>', 'before_title'  => '<h4>', 'after_title'   => '</h4>'));
	register_sidebar(array('name' => 'WooCommerce Sidebar', 'before_widget' => '<div id="%1$s" class="widget %2$s">','after_widget'  => '</div>', 'before_title'  => '<h4>', 'after_title'   => '</h4>'))
        register_sidebar(array('name' => 'BBPress Sidebar', 'before_widget' => '<div id="%1$s" class="widget %2$s">','after_widget' => '</div>', 'before_title' => '<h4>', 'after_title' => '</h4>'))

now there will be a new sidebar area in your appearance > widgets section in the admin panel. After that to get it to show on your page open up your bbpress.php file  (which you created based off the page-sidebar.php file) and change this part:

<div id="sidebar" class="col span_3 col_last">
	<?php get_sidebar(); ?>
</div><!--/span_9-->

to this:

<div id="sidebar" class="col span_3 col_last">
	<?php dynamic_sidebar('BBPress Sidebar'); ?>
</div><!--/span_9-->

Cheers :)