AutoTweetNG allows to define specific Targets for your Posts.
Posts are delivered to Facebook Channels following the specific targets.
https://www.extly.com/how-to-autotweet-in-5-minutes-from-joomla.html
https://www.extly.com/how-to-autotweet-from-your-own-facebook-app.html
How to AutoTweet to Targets from Joomla to Twitter, Facebook, or LinkedIn.
https://www.extly.com/how-to-automate-social-media-targeting.html