What does a team captain in chess do? I was made the "team captain" of the chess club I am a member of for a match with a chess club in a different city.I want to know all the requirements for being a team captain.All I did was choose the team members based on the highest rating.
Let's see what FIDE says, Team Captain’s Role in Team Tournaments:


  (a) The role of a team captain is basically an administrative one
  during play. Depending on the regulations of the specific competition,
  the captain shall be required to deliver at a specific time a written
  list naming the players in his team participating in each round, to
  communicate to his players their pairing, to sign the protocol
  indicating the results in the match at the end of the play, etc.
  
  (b) Whenever the team captain speaks to one of his players, he should
  do so only through or in the presence of an arbiter, using a language
  the arbiter can understand.
  
  (c) A captain is entitled to advise the players of his team to make or
  accept an offer of a draw or to resign a game, unless the regulations
  of the event stipulate otherwise. He must confine himself only to
  brief information, based solely on the circumstances pertaining to the
  match. He may say to a player, “offer a draw”, “accept the draw”, or
  “resign the game”. For example, if asked by a player whether he should
  accept an offer of a draw, the captain should answer “yes”, “no”, or
  delegate the decision to the player himself. He shall give no
  information to a player concerning the position on the chess board
  and/or the clock times, nor consult any other person and/or computer
  as to the state of the game. The captain shall refrain from any
  intervention during play.
  
  (d) Players are subject to the same prohibitions. Even though in a
  team competition there is a certain team loyalty, which goes beyond a
  player’s individual game, a game of chess is basically a contest
  between two players. Therefore a player must have the final say over
  the conduct of his own game. Although the advice of the captain should
  weigh heavily with the player, the player is not absolutely compelled
  to accept that advice. Likewise, the captain cannot act on behalf of a
  player and his game without the knowledge and consent of the player.
  
  (e) A team captain should encourage his team always to follow both the
  letter and the spirit of Article 12 of the FIDE Laws of Chess
  concerning the conduct of the players. Team championships, in
  particular, should be conducted in the spirit of the highest
  sportsmanship.


A player which has highest rating and better knowledge about rules is the best candidate to be a captain.