restrict-tab-to-a-ceertain-group.php

<?php 
/**
 * Wbcom hide admin products tab to a certain groups.
 *
 * @return void
 */
function wbcom_remove_admin_products_tab_from_group_tabs() {
	global $bp;
	$user_id    = get_current_user_id();
	$group_id   = $bp->groups->current_group->id;
	$user_admin = groups_is_user_admin( $user_id, $group_id );
	if ( $user_admin && 27 === $group_id || 18 === $group_id ) {
		remove_action( 'bp_init', 'wbcom_add_admin_product_nav_at_single_group_page' );
	}
}
add_action( 'bp_setup_nav', 'wbcom_remove_admin_products_tab_from_group_tabs' );