You will get 3 options in Avacs web version "Rooms" "Menu" and "Users" -> Click on "Rooms" -> Here you will get a option "Newroom" -> Now click on "New room" option -> You will get a window -> Fillup there room name, room type (Public room or Private room), select languageand than click on " save icon" (You can see " save icon" in top right side of thatwindow, left side of a cross mark).

Note: Only administrator creates countries room. And your rating must be more than 100 as Amateur rank,than you can create any public or private room.