Content moderators review content before it is published in the community. As a community administrator, you may want to designate a moderator to review and approve content before it's published if content in a place could become contentious or contain sensitive information.
Community administrators can enable moderation for most content types in spaces, sub-spaces, social groups, blogs, and so on. You can designate one or several content moderators per place. For a complete list of content types and the places where you can enable content moderation, see Who Moderates What?
Private content cannot be moderated. This includes content created in private groups, secret groups, private discussions, and Your Documents that have visibility limited to the author or specific users.