BuddyPress.org

@onfleekresources

It can be done with some custom code, or you can also checkout follow plugins.

1- BuddyPress Private Community Pro plugin that adds a couple of features for admin and it allows admin to select based on user role or member type who can post on activity stream and you can also apply same limits on other BuddyPress features.

2- You can set some specific members as auto friends to all members, and any activity admin members are going to make will be displayed to all member’s activity page

You cannot get roles from just the user id.
Try:

function remove_private_message_button( $button ) {

	$user_id = bp_loggedin_user_id();
	$user = get_userdata( $user_id );
        $user_roles = $user->roles;
	$allowed_ids = array( 23, 6, 25 );

	if ( !empty( $user_roles ) && is_array( $user_roles ) ) {

		if ( in_array( 'subscriber', $user_roles, true ) ) {

			$button = '';
			
		} elseif ( in_array( 'contributor', $user_roles, true ) ) {
				
			if ( in_array( $user_id, $allowed_ids, true ) ) {
				return $button;	
			}

		} 

	}

	return $button;

}
add_filter( 'bp_get_send_message_button', 'remove_private_message_button', 1 , 1 );

Another lock-down option is: https://wordpress.org/plugins/bp-simple-private/

However, if you just need some private pages & categories, then you don’t need BuddyPress at all unless there is some interface aspect that requires profiles.

If you aren’t using profiles, then there are probably some WP plugins that do what you want.
Or, the custom WP code to accomplish is quite simple – if you are a WP dev.

>> I have the menus “Activate and” register “which point to my home page .. ?? how it is done?

@alama32 That’s the default behavior for the register page when you’re logged in. You can see your register page even when you’re logged in by opening a private window. So if you’re using Chrome, open up “New incognito window”; or on Firefox, open up “New Private Window”; or Edge, open up “New InPrivate Window”, etc.

>>Yes, I can choose the “Register & Activate pages” that have been created by buddypress, but if I want to view those pages then I will come to both of them on the Homepage …

@robproce That’s the default behavior when you’re logged in. You can see your register page even when you’re logged in by opening a private window. So if you’re using Chrome, open up “New incognito window”; or on Firefox, open up “New Private Window”; or Edge, open up “New InPrivate Window”, etc.

I normally open a private browser window when I need to see the site as a logged out user and stay logged in using another tab.

How does the page look when you have the twentytwenty theme active? Unfortunately as BeTheme is a premium theme I may not be able to help much.

I just use standard BP on my sites and using the normal wordpress groups users can upload images although when uploading for posts etc they are not private if this is something you are looking for.