How to invite contacts to an existing conversation without opening a new chat box?

in yahoo messenger, how can i add more contacts to an existing conversation without opening a new chat box? when i click on conference and invite others, a new chat box will appear. can't the newly invited joined in the existing conversation chat box like window messenger?
How to invite contacts to an existing conversation without opening a new chat box?
It is possible.





When you are inside the conference and you are the host of that conference.





Go to the top and click Conference tab.


Click Invite more people.





It is just like a conference in real life. If you sent the memo to every body, all of them will come otherwise ....





I hope this helps you : )