discourse/app/assets/javascripts/admin/addon/templates/embedding-posts-and-topics.hbs

<DPageSubheader @titleLabel={{i18n "admin.embedding.posts_and_topics"}} />

<Form @onSubmit={{this.save}} @data={{this.formData}} as |form|>
  <form.Field
    @name="embed_by_username"
    @title={{i18n "admin.embedding.embed_by_username"}}
    @validation="required"
    as |field|
  >
    <field.Custom>
      <UserChooser
        @value={{field.value}}
        @onChange={{field.set}}
        @options={{hash maximum=1 excludeCurrentUser=false}}
        class="admin-embedding-posts-and-topics-form__embed_by_username"
      />
    </field.Custom>
  </form.Field>
  <form.Field
    @name="embed_post_limit"
    @title={{i18n "admin.embedding.embed_post_limit"}}
    @format="large"
    as |field|
  >
    <field.Input />
  </form.Field>
  <form.Field
    @name="embed_title_scrubber"
    @title={{i18n "admin.embedding.embed_title_scrubber"}}
    @format="large"
    as |field|
  >
    <field.Input placeholder="- site.com$" />
  </form.Field>
  <form.CheckboxGroup as |checkboxGroup|>
    <checkboxGroup.Field
      @name="embed_truncate"
      @title={{i18n "admin.embedding.embed_truncate"}}
      as |field|
    >
      <field.Checkbox />
    </checkboxGroup.Field>

    <checkboxGroup.Field
      @name="embed_unlisted"
      @title={{i18n "admin.embedding.embed_unlisted"}}
      as |field|
    >
      <field.Checkbox />
    </checkboxGroup.Field>
  </form.CheckboxGroup>
  <form.Submit @label="admin.embedding.save" />
</Form>