1. Method of management of decisions between a central manager and at least one terminal within a network architecture distributed and hierarchically organized in N levels with N≧2, the central manager being included in a rank N level, said at least one terminal being included in a rank 1 level, wherein the method comprises a step of distribution of a decision tree built by the central manager and relying on said architecture, the step of distribution of the decision tree itself comprising the following steps, for a given terminal: from the decision tree, called a rank N tree, the central manager creates a simplified tree of rank N-1; if N=2, the central manager transmits the simplified tree of rank N-1 to the given terminal so that the given terminal takes a decision on the basis of the simplified tree of rank N-1 and executes the decision; if N≧3, the following steps are performed, after k has been initialized at N-1 a) the central manager transmits the simplified tree of rank k to the intermediate manager of rank k included in the rank k level; b) the intermediate manager of rank k creates a simplified tree of rank k-1 from the simplified tree of rank k; c) if k≧3, the intermediate manager of rank k transmits the simplified tree of rank k-1 to an intermediate manager of rank k-1 included in the level of rank k-1 and the process returns to the step b) after having decremented k by one unit; if k=2, the intermediate manager of rank k transmits the simplified tree of rank k-1 to the given terminal, so that the given terminal takes a decision on the basis of the simplified tree of rank k-1 and executes the decision.