When you create a post with ticking the no replies box, nobody will be able to respond to the post. This may come in handy when you just want to make an announcement.
Via the following steps you can easily create a post without replies.
Step 1: Select who you would like to address
This can either be an individual, a WorkSpace or even the entire company
Step 2: Tick the no replies box
Step 3: Create your post
A bar with the text: no replies will indicate that nobody is able to reply.