Hi Gilbert,
Now4real introduces the concept of pagechat, in which the page itself defines a chat room for users present on the same page at the same moment.
By configuring the scope parameter, you can choose to have a single chat room shared between all the pages of your site (this is the default behavior) or to have different chat rooms for each page of your site.
Thanks to the flexibility of the page_context parameter, you can set up chat rooms based on your preferred logic.
For example, you can group different pages to share the same chat context.
This requires a little bit of programming skill.
Please check the documentation of the page_context parameter here (scroll down to page_context).
Regards,
Vincenzo