bp_do_activation_redirect()

function bp_do_activation_redirect() {

	// Bail if no activation redirect.
	if ( ! get_transient( '_bp_activation_redirect' ) ) {
		return;
	}

	// Delete the redirect transient.
	delete_transient( '_bp_activation_redirect' );

	// Bail if activating from network, or bulk.
	if ( isset( $_GET['activate-multi'] ) ) {
		return;
	}

	$query_args = array();
	if ( get_transient( '_bp_is_new_install' ) ) {
		$query_args['is_new_install'] = '1';
		delete_transient( '_bp_is_new_install' );
	}

	// In Appearance > Menus, make "BuddyBoss" available by default
	$get_existing_option = get_user_option( 'metaboxhidden_nav-menus', bp_loggedin_user_id() );
	if ( '' === $get_existing_option || false === $get_existing_option ) {
		$hidden_metaboxes = array();
		update_user_option( bp_loggedin_user_id(), 'metaboxhidden_nav-menus', $hidden_metaboxes ); // update the user metaboxes
	} else {
		if ( ( $key = array_search( 'add-buddypress-nav-menu', $get_existing_option)) !== false ) {
			unset($get_existing_option[$key]);
		}
		update_user_option( bp_loggedin_user_id(), 'metaboxhidden_nav-menus', $get_existing_option ); // update the user metaboxes
	}

	// Redirect to dashboard and trigger the Hello screen.
	wp_safe_redirect( add_query_arg( $query_args, bp_get_admin_url( '?hello=buddyboss' ) ) );
}