I've been wrong before about Arena, but I don't believe the type of tournament you describe is possible.
Edit: There is at least one GUI that can do team tournaments. It's called ChessGUI, and it's not as easy to use as Arena, IMO. You can get it here ---->> ChessGUI
I've never tried to run such a tournament so I can't say how well it works.
I'm bran new to Arena; and cant seem to google up the anwser to I expect a simple Question.
I'm trying to set up a Team Tournament in Areana - say
Shredder 6, 7, 8 vs
Rybka 2K, 1800, 1600 as I am trying to get a fell for the relative Elo's for the Stockfish Engine, and dont want to have to run all the spam games of a Round Robin?
Can this be done? any ideas. Your help most appreciated. BB