Enable Disqus comments for your Poster Items.
In order to enable Disqus Comments for your Poster Items, 2 settings have to be done. First, the Disqus username has to be entered in the Poster main stack. You get that username from your Disqus admin dashboard.
Second, enable the Disqus Comments checkbox on each Poster Item, where the comments area should be visible underneath the main content area.