Supporting minority languages and Wikimedia community (Round table)

Contemporary humans have developed 7,167 natural languages, 331 have secured a Wikipedia which then becomes de facto central online hub for those communities. 95.4% (~6,800) of the linguistic diversity isnt supported by Wikimedia while half (3,500) are expected to disappear in coming 70 years. How can wikimedians help knowledgeable communities to promote their language ?