The first thing to know is, you have to be a panelist to host, and by host we mean start an xchange. To do that you create a host post using the Civol Recorder and publish it. This means you only see the Add Host Post button if you're already a panelist.
The Civol Player plays xchanges, a set of posts from a panel of speakers on a specific discourse (issue) and thread. The top-level origin post for an xchange is what we call a host post, and all the other posts in the exchange are called reply posts.
