How we could add the new function of the chat in the waiting room into our custom UI?! I mean in normal status shows nothing and when the host sends a message to everyone in the meeting and in the waiting room the chat button will appear!
That is a great question. When the host sends a chat message to the waiting room, the callback is actually the same one you would receive for a normal in-meeting chat message. You can use the onChatMessageReceived callback in InMeetingServiceListener.