This article explains how to work with a discussion list for a community site in SharePoint 2013.
Step 1Login to the SharePoint 2013 site as an administrator. Here I am logged in as Alan Wilkins User.Step 2Go to the site contents in the Community Site Portal.Step 3Click the Discussion List menu item.Step 4Click the new discussion link. Enter the subject and body of the discussion. If you have a question then select the question checkbox then click the Save button.Your discussion will show as in the following.Reply for the DiscussionClick which discussion you need to reply to. Here I have logged in with another user (James Hopes).Once entering into the reply text box click the Reply button.You also like and unlike the specific discussion comments. The like and unlike counts are also shown in the discussion list. SummaryIn this article we explored how to work with a discussion list for the community site in SharePoint 2013.
SharePoint Online And Office 365 Administration