dros/src/pages/view/components/MarkGroup.tsx

import React from 'react';
import { Button, Space } from 'antd';

const MarkGroup = () => {
  return (
    <Space>
      <Button>Add L Mark</Button>
      <Button>Add R Mark</Button>
      <Button>Delete Selected Mark</Button>
    </Space>
  );
};

export default MarkGroup;