Hi Amitesh!

Here is the scheme of the promotion's work:

After the post is promoted it should be shown in all subscription timelines/outlines in natural order by date.

For example, if user A is subscribed to user B and C. Then he sees posts from user B and C in his subscription timeline. When admin promotes a post from user X, then user A will see a single post from user X between other posts from users B and C.