You can also promote already published posts or imported posts. To do this, proceed as follows:
Open "Post Publishing" - "Posts"
Search for the published post you want to promote
Click on "Promote Post
Define the desired settings to promote the post (ad target, audience, placements, duration & budget).
Click "Promote Post" to create a campaign to promote the post according to the specifications.
ℹ️ You will be informed about the start, progress & completion of the campaign according to your settings for notifications .