To replace in /QuestCreator/config.yml

gui:

  ...

  # Confirm GUI look
  confirm_gui:
    size: 9
    name: 'Confirm action'
    items: []
    item_cancel:
      slot: 5
      type: RED_WOOL
      name: '&cCancel'
    item_confirm_startquest:
      slot: 3
      type: GREEN_WOOL
      name: '&aConfirm'
      lore:
        - '&7Start quest {quest}'
    item_confirm_cancelquest:
      slot: 3
      type: GREEN_WOOL
      name: '&aConfirm'
      lore:
        - '&7Cancel quest {quest}'