```ts
// ButtonGroup.stories.ts

import { Meta, moduleMetadata, Story } from '@storybook/angular';

import { CommonModule } from '@angular/common';

import { ButtonGroup } from './ButtonGroup.component';
import { Button } from './button.component';

//👇 Imports the Button stories
import * as ButtonStories from './Button.stories';

export default {
  /* 👇 The title prop is optional.
   * See https://storybook.js.org/docs/7.0/angular/configure/overview#configure-story-loading
   * to learn how to generate automatic titles
   */
  title: 'ButtonGroup',
  component: ButtonGroup,
  decorators: [
    moduleMetadata({
      declarations: [Button],
      imports: [CommonModule],
    }),
  ],
} as Meta;

 /*
 *👇 Render functions are a framework specific feature to allow you control on how the component renders.
 * See https://storybook.js.org/docs/7.0/angular/api/csf
 * to learn how to use render functions.
 */
export const Pair: Story = {
  args: {
    buttons: [{ ...ButtonStories.Primary.args }, { ...ButtonStories.Secondary.args }],
    orientation: 'horizontal',
  },
};
```
