Hi,
That's normally what you can do with the robots.txt file :
docs.joomla.org/Robots.txt_file
If you want to exclude the checkout from being indexed, here is how you can do it:
- create a menu item of the type HikaShop checkout and without parent menu item in the joomla menu manager
- select that meu item in the "force menu on checkout" setting of the HikaShop configuration
- in your robots.txt add a row like :
where xxx is the alias of the menu item for the checkout.
That way, all the URLs for the checkout menu item will be discarded for indexing when crawlers reindex your website in the future. Note that this can potentially take time.