If a topic requires post approval, posts only appear to users with permission to approve them. You must manually approve these posts to make them visible to all users. Users with permission to approve posts in a topic can create posts automatically without requiring their approval.
You can enable and disable post approval from the Properties tab when creating or editing a forum or topic. Once you enable post approval , a  Posts require approval icon appears beside the forum or topic name.
 Posts require approval icon appears beside the forum or topic name.
If a post is not appropriate for the topic and you do not want to approve it, you can do any of the following:
Click  Edit from the context menu of the forum or topic you want to add post approval to and select A moderator must approve individual posts before they display in the forum in the Properties tab to ensure that you have the ability to approve posts activated.
 Edit from the context menu of the forum or topic you want to add post approval to and select A moderator must approve individual posts before they display in the forum in the Properties tab to ensure that you have the ability to approve posts activated.
Click  Approve all Replies in Thread from the context menu of the thread to approve all posts in the thread.
 Approve all Replies in Thread from the context menu of the thread to approve all posts in the thread.
Click the  Approve Post link inside the post you want to approve, or click
 Approve Post link inside the post you want to approve, or click  Approve Post from the context menu of the post.
 Approve Post from the context menu of the post.
Click  Unapprove Thread  from the context menu of the thread you want to unapprove.
 Unapprove Thread  from the context menu of the thread you want to unapprove.
Click  Unapprove Post from the context menu of the post you want to unapprove.
 Unapprove Post from the context menu of the post you want to unapprove.
You can find unapproved posts in the following ways:
 Approve Post link at the top of the post.
 Approve Post link at the top of the post. Editing a post allows you to change the subject or text, add or remove attachments, or change whether the post is pinned. You cannot make a post anonymous or change the name of the author. Users who edit a post appear in a list in the post’s history log.
Identify edited posts by the  Last Edited icon in the post header.
 Last Edited icon in the post header.
Note In order to edit other users' posts, you must have the Edit Any Post permission enabled for your role.
 Edit Post from the context menu of the post you want to edit.
 Edit Post from the context menu of the post you want to edit.
When a post is edited, the post history log records all previous versions of the post, its editors, and when it was approved or unapproved.
Click  View Post History from the context menu of the post.
 View Post History from the context menu of the post.