CComment docs
EasyBlog – com_easyblog (Pro feature)
Go to your Joomla backend -> components -> CComment -> settings -> new, from the component dropdown field select com_easyblog and click next. Save the configuration. Now go to components->easyblog->settings->comments->general - > enanable comment system – set it to yes. Then go to the comments->integration tab and select CompojoomComments -> that is all! Now in your blogs you should see the comment form from CComment.