[celziobiaz]

There are many type of chat rooms boxes. Some prefer it as you mentioned, a floating chat or embed in the chat. Once I added a chat GoDaddy forced me to remove it as they do not like chat rooms in a shared server. So I was forced to use a hosted service chat room.

What was important to me is that I could chat in a group as well as private using a video chat. Now there are not a lot of options with respect to video chat, but I used a chat room (a floating one on the right side on the lower part of the chat) that uses WebRTC technology that is basically means it will work good on PC (chrome & dd) but not in mobiles (tried it in my iPhone).

https://wordpress.org/plugins/rumbletalk-chat-a-chat-with-themes/