How to enable Ajax popup like Hikashop demo?!

-- url of the page with the problem -- : demo.hikashop.com/index.php/en/hikashop/...uct/7-business-shoes
-- HikaShop version -- : 3.0.0
-- Joomla version -- : 3.6.5
-- PHP version -- : 5.6.25
-- Browser(s) name and version -- : Firefox 50.0.2

Hello,
How can I make an Ajax popup like Hikashop demo site? I mean this:

Business shoes
Which settings should be configured and which plugins should be installed?!

Hi,

www.hikashop.com/blog/367-hikashop-3-0-out.html#cart
(and www.hikashop.com/blog/357-hikashop-3-0-beta.html )

It is done thanks to the plugin "cart notify" that you need to publish and configure.

Regards,