Sorry for posting in “installing”.  Tried to edit, but it takes me to buddypress.org main page.  Wont allow me to edit.
		
	 
	
	
	
 
		
			
	
	
		
		Topic moved to Creating & Extending forum
		
	 
	
	
	
 
		
			
	
	
		
		There is already a my favorites tab in BuddyPress menu. Don’t know what you’re trying to do, but here is a code example you can try(or study).
Add it to your child-theme functions.php or bp-cutom.php
function my_test_setup_nav() {
global $bp;
$parent_slug = 'test';
$child_slug = 'test_sub';
	//name, slug, screen, position, default subnav
	bp_core_new_nav_item( array(
		'name' 					=> __( 'Company Labs' ),
		'slug' 					=> $parent_slug,
		'screen_function' 		=> 'my_test_page_function_to_show_screen',
		'position' 				=> 40,
		'default_subnav_slug' 	=> $child_slug 
	) );
	//Add the subnav items to the profile/
	// name, slug, parent_url, parent slug, screen function
	// Tab 
	bp_core_new_subnav_item( array( 
		'name' 					=> __( 'Company Favs' ), 
		'slug' 					=> $child_slug, 
		'parent_url' 			=> $bp->loggedin_user->domain . $parent_slug.'/', 
		'parent_slug'			=> $parent_slug, 
		'screen_function' 		=> 'my_test_page_function_to_show_screen'
		) );
	}
	// tab
	function my_test_page_function_to_show_screen() {
	//add title and content here – last is to call the members plugin.php template
	add_action( 'bp_template_title', 'my_test_page_function_to_show_screen_title' );
	add_action( 'bp_template_content', 'my_test_page_function_to_show_screen_content' );
	bp_core_load_template( apply_filters( 'bp_core_template_plugin', 'members/single/plugins' ) );
	}
	function my_test_page_function_to_show_screen_title() {
	echo 'Taskforce Titled';
	}
	function my_test_page_function_to_show_screen_content() {
	echo 'Taskforce content';
	do_action( my_test_post);
	}
add_action( 'bp_setup_nav', 'my_test_setup_nav' );
function my_test_fav_custom_content() {
?>
	<h3>Hello Company !</h3>
	<p>Lorem ipsum de facto est</p>
<?php	
}
add_action(  'my_test_post', 'my_test_fav_custom_content' );
		
	 
	
	
	
 
		
			
	
	
		
		Sorry I thought I was clear.  I dont need an example of how to create the tab and the submenus.
What I did was write a class that creates a top level member area tab called Favorites that consolidates all types of favorites within a single tab.  https://github.com/colabsadmin/bp-favorites/blob/master/bp-favorites.php
The submenus that have been created so far are Activity, Topics, Posts and a few more for some CPTs that I’ve written.   This will make it easier for my users to find their favorites when they cant remember if it came from a topic, posts, activity, etc.  Instead of jumping around from tab to tab, its all in one tab.  The only submenu that doesnt work is Activity.  The code, which I provided in my first question, was copied directly from Buddypress core code with one change to use ‘bp_core_new_subnav_item’.  I used similar code to display content in all the other submenus. For example, the following shows the favorite topics
// Favorite topics
bp_core_new_subnav_item( array(
		'name'            => __( 'Topics', 'kleo' ),
		'slug'            => "topics",
		'parent_url'      => $bp->displayed_user->domain . $bp->bp_nav['favorites']['slug'] . '/',
		'parent_slug'     => $bp->bp_nav['favorites']['slug'],
		'screen_function' => 'bbp_member_forums_screen_favorites',
		'position'        => 10,
		'item_css_id'     => 'favorites'
));
So, my question, does bp_activity_screen_favorites() only work within the context of /members/membername/activity action?  Or can it be used elsewhere as in /members/membersname/favorites?
		
	 
	
	
	
 
		
			
	
	
		
		bp_activity_screen_favorites() loads that screen. 
Try using: bp_activity_get_user_favorites()
Looking thru the source code will answer these kinds of questions. 
		
	 
	
	
	
 
		
			
	
	
		
		That’s what I’m trying to do.  Load that screen, but under a different tab. 
		
	 
	
	
	
 
		
			
	
	
		
		The only way I got this to work is by duplicating the activity loop (passing the scope=favorites argument) and all of the code that formats the activities, which I was trying to avoid.