There is a “Game Status Append” field where you could add “Forfeit” or whatever to the game status. If you want to have a winner & a loser, and you are using the automatic standing calculation, you could not mark it final (then it would not count as a game played) or you could mark it final, then it would show as a tie. Most leagues score a forfeit as 1-0 or whatever and mark it final. So the status would show “0-0 forfeit” or “1-0 forfeit”
Hope this helps.
-Mark