In addition to manually setting content approval for items, SharePoint supports using workflows to approve items. For custom workflows, SharePoint provides the action Set Content Approval Status (custom workflows and actions are covered in the next lesson in this course). For SharePoint 2013 standard or enterprise installation, there is an out-of-box workflow for approving content.
The following walk-through will show you how to activate the Workflows site collection feature and assign an instance of the Approval - SharePoint 2010 workflow to the Approval Items list.
The out-of-box content approval workflow is not available with SharePoint Foundation. If your site is running on SharePoint foundation, you will be unable to perform the walk-through.