<DemoItem label="1 calendar" component="DateTimeRangePicker">
  <DateTimeRangePicker calendars={1} />
</DemoItem>
<DemoItem label="2 calendars" component="DateTimeRangePicker">
  <DateTimeRangePicker calendars={2} />
</DemoItem>
<DemoItem label="3 calendars" component="DateTimeRangePicker">
  <DateTimeRangePicker calendars={3} />
</DemoItem>