at the bottom of members > groups > (GROUP NAME HERE) > Social tab, it says

"If you have enabled integration with Facebook and/or Twitter, users can import statuses from these services."

Where is the facebook and twitter status integration? Searched all over but couldn't find instructions for it.

 

Type Social Media Promotion in your ACP search bar.

Actually, I think this is in the Community Enhancements section.  Make sure you activate and turn on Facebook and Twitter logins.  

Thesocial media promotion is to export content items, not import.