To manage the contents of a folder, you can assign a collection of users or a single user to moderate the folder. Folder moderators can approve or reject documents. Folder moderators with Admin access to the folder can edit documents before approving them. Documents in a moderated folder do not become publicly available unless approved by a moderator.
If a user has checked in changes to a document in a moderated folder, those changes will not be visible until a moderator approves the changes. If a user has uploaded a document to a moderated folder, the document will not be visible until a moderator approves the document.
When at least one moderator is set for a folder, that folder is marked as a moderated folder and anyone with Admin access to the folder can also act as a moderator.
When you assign moderators to a parent folder, all subfolders inherit the moderator list. If a subfolder of the parent folder already has a moderator list, the subfolder inherits changes made to the parent folder's moderator list. If all moderators are removed from a parent folder, the parent folder and all of its subfolders are no longer moderated.
When you add or remove a moderator from a folder, the moderator is subscribed to or unsubscribed from that folder.
To assign a moderator:
In the Documents application view page, right-click a folder in the navigation pane.
Click 
Edit
Properties.
Make sure the Properties tab is selected in the Edit Folder Properties dialog box.
Click Moderators.
In the Choose Users dialog box, select the project personnel whom you want to make moderators of this folder and click Finish.
In the Edit Folder Properties dialog box, click Finish.