@array = (
    {
        level => 1,
        department = 'Office of President',
    },
    {
        level => 2,
        department = 'Recruiting',
    },
    {
        level => 2,
        department = 'Software',
    },
    {
        level => 3,
        department = 'MIS',
    },
    {
        level => 3,
        department = 'System Operations',
    },
    {
        level => 2,
        department = 'Pipe line',
    },
);

##</code><code>##

Office of the President
   Recruiting
   Software
     MIS
     System Operations
   PipeLine 

##</code><code>##

Office of the President (Make this as base level)
  PipeLine
  Recruiting
  Software
      MIS
      System Operations
etc.....