As the number of participants increases, the horizontal space allocated to each diminishes. Additional space may be made by resizing the window.
A participant may set the name in the Menu window or by the command-line parameter (-N). Name defaults to the user name and local host.
This facility is useful where two or more users are participating in a conference on separate workstations in the same room and one is providing the output via speakers. In this case, the user with the speakers should mute the other user(s) to prevent feedback.
The statistics are updated every second or so. The three columns show:
Full details of the options available for statistics are in the vat manual page.
By clicking the middle button on a name, a separate vat session is created in a new vat window that talks only to that participant. For a two-way conversation, the other participant must likewise select you from his window.
If you create a new window aimed at a particular participant but they haven't created a window aimed at you, they will hear you speaking in the main conference window and may not realize that your audio is being sent only to them. You should tell them that you want a private conversation so that they do not reply to the conference as a whole.