yes thanks, i also tried this watching a video on the link Adobe Experience Manager Help | Set up ContextHub with AEM Sites , now I have got my targeting mode on the project's pages.But after that the contextHub option on toolbar in the preview mode is not coming. Can i get help on that too?

It is already there in my customheaderlibs file, although i remember one thing i did, which might have been wrong. On the Experience Manager rail, click or tap Tools > Sites > Context Hub.Click or tap the default Configuration Container.Click or tap the Context Hub Configuration.Click or tap the Cre...

yes it is seen on we-retail only, but i cannot see it on my own projects.

I have created a page in my project under sites and when i am editing that page I am not able to see the targeting mode in the modes dropdown in order to apply it on the experience fragment used.Thanks in advance.