Hi Satish!
In your repeating group’s data source, you should be able to access the “sort by” dropdown. You can set this to sort by “Creation Date” and then select “descending=yes” to ensure the most recent items are shown first.
The next steps are dependent on whether you are using legacy responsive or new responsive in your application.
For legacy responsive, make sure the repeating group is set to “Ext. Vertical Scroll” and only shows 25 items to start.

For new responsive, you’ll want to set fixed columns to 1 and uncheck fixed rows. Then, ensure the height of your repeating group element when combined with the minimum height setting of your row generates 25 rows. From there, as long as you don’t have the “show all items immediately” box checked, your repeating group should lazy load items as the user scrolls down the page.

For instance, in the screenshot above, you’d want to make sure your repeating group element had a minimum height of at least 1250px (25*50) in order to ensure that 25 rows with a minimum height of 50px each all showed on page load.