Create a custom Announcement Section for the Frontpage of Jomsocial.
Administrator can post news bulletins using WYSIWYG, which will post in created announcements section.
See the PDF attachment for complete details.
Not actually a Joomsocial module - but a std. Joomla! ext.
I have written a module the will scroll and display any specific category from the article manager. If we create a new category for these specific articles you wan on the from page and then install my module and have it display on the front page - that's pretty much your issue solved.
Kind regards,
Darren