Information tooltip for characteristic

-- url of the page with the problem -- : mywebsite.com/mypage
-- HikaShop version -- :2 .3.0
-- Joomla version -- : 2.5.20

Please, where is the option for information image (with tooltip when mouse over) in options? Just like in your
demo

I attach a screen shot of the option

If you enter a description in your option product, it will display automatically.

Thanks a lot!