Like the standard publication process, a custom approval work flow is a formalized set of reviews and approvals to be completed before a piece of Web site content can be published. However, it is uniquely customized for specific needs. For example, you may wish to create a Legal Approval work flow for items that must be approved by a staff lawyer before publication. You then make your organization's staff lawyer an assignee for one or more tasks within the work flow.
Note: Editing an item before it has been approved cancels the approval work flow. In this case, you will have to resubmit the item to the approval process.
Always keep in mind that while some preliminary setup is required, a custom work flow task assignee does not need an administrative role and might not be an internal administrator.