Teamber

digraph G {
node [style=filled,fontsize=9];

node [shape=rect,fillcolor="#AAAAAA"];

// Event - festival
  festival [label="Festival"];

teamBar [label="Bar"];
  teamFood [label="Grillades"];
  teamMusic [label="Musique"];
  teamFinance [label="Caisse"];

teamBar -> festival;
  teamFood -> festival;
  teamMusic -> festival;
  teamFinance -> festival;

leaderBar [label="Responsable"];
  memberBar [label="Membre"];
  leaderFood [label="Responsable"];
  memberFood [label="Membre"];
  leaderMusic [label="Responsable"];
  memberMusic [label="Membre"];
  leaderFinance [label="Responsable"];
  memberFinance [label="Membre"];

// Inscription
  node [shape=ellipse,fillcolor="#CC8888"];

anne [label="Anne"];
  paul [label="Paul"];
  pierre [label="Pierre"];
  jean [label="Jean"];
  christian [label="Christian"];
  marie [label="Marie"];
  germaine [label="Germaine"];
  michel [label="Michel"];
  albert [label="Albert"];
  adeline [label="Adeline"];
  sylvie [label="Sylvie"];
  christine [label="Christine"];
  raymond [label="Raymond"];
  fred [label="Fred"];
  samuel [label="Samuel"];

anne -> leaderBar -> teamBar;
  paul -> memberBar -> teamBar;
  pierre -> memberBar;
  jean -> memberBar;

christian -> leaderFood -> teamFood;
  marie -> memberFood -> teamFood;
  germaine -> memberFood;
  michel -> memberFood;
  albert -> memberFood;

adeline -> leaderMusic -> teamMusic;
  sylvie -> memberMusic -> teamMusic;
  christine -> memberMusic;

raymond -> leaderFinance -> teamFinance;
  fred -> memberFinance -> teamFinance;
  samuel -> memberFinance;
}