To reply to a post, simply click on the post and scroll to the foot of the page. There you should see a box where you can enter your reply. If you don’t see a text box below the message, that probably means that the message has been “closed” and no further comments are allowed (for example, on the Code of Conduct post). If you would like to be notified is someone else replies to the same post, click on the box beside “Notify me of follow-up replies via email”. Otherwise, just press the “submit” button and your post will go live.