I'm not sure if I fully understand your question but I'll point out a couple of things.
When members are new here there initial posts are sent to the moderation queue waiting for a moderator to approve them. This normally happens within a few hour. Once approved the posts can be seen by everyone here.
If you are talking about what you see when you click on "
New Posts", that is a custom page that will only display the threads that have new posts since you have lasted viewed a thread or threads that still contain posts that you haven't viewed before. Once you view a thread from the list, it will no longer be shown on your "New Posts" list.