Actually, you would use sets with Administrator and Email...at least if you want them to be visible via serverinfo. The purpose of setting such things is not to display them in the game but to allow people to see them when they query the server via the in-game browser, ASE, GameSpy, etc.
sv_timeout = time in seconds that the server will wait for a packet from a client before dropping them. NOTE: Clients loading maps do not send packets. If this is too low, players will get dropped frequently during map changes.
sv_timeouttospec = time in seconds that the server will let a player sit idle before making them a spectator (not sure if this is broken, I haven't actually SEEN it work)
g_inactivity = time in seconds that the server will let a player sit idle (on a team, not as a spectator) before dropping them
For me, g_inactivity is broken. Every time I set it to anything, my server crashes. When I set it to 0, it's fine. Could just be me since I haven't seen anyone else complain about it. Or, maybe they fixed it in one of the ded server patches and I just haven't tried it again since.