PermissionsEx example

groups:
    Examplegroup:
        default: true
        prefix: '[ExampleGroup]'
        options:
            rank: 0
        build: true
        permissions:
        - bukkit.command.gamemode
      Examplegroup2:
          default: false
          prefix: '[Examplegroup2'
          options:
            #rank is for if they will have permission to go to the next level say co-owner wante to be owner he would not because of the rank system
            rank: 1
          #build true = can destroy, build etc false = can't destroy build etc...
          build: true
          worlds:
              world1:
                  permissions:
                  # removing gamemode command from player access in the current world
                  - -bukkit.command.gamemode
                  #inheritance gets the group specified and get their permissions
              world2:
                  permissions:
                  # giveing access to command in specified world
                  - bukkit.command.gamemode
          inheritance:
              - Examplegroup