Walkover (bye, free round) works like this:
*Before* pairing a given round, use the "Avaliable" field to mark those players "Unavailable" (change the green tick mark to a red X).
Then do a normal pairing. Tournamentservice will pair the rest of the group but leaves the unavailable with no opponnent, no color, no result.
You can then manually change his result to "draw by forfeit" (=half point).
If you want, you may also set his opponent to "free" in Konrad systems. This makes no real defference to TS but is just for you to keep track of granted free round as opposed to un-announced absence.