Approving/Rejecting items in Media Library

In the Submissions Library, right-click on the item then click More on the menu and then click on Approve/Reject.
Select either the item is Approved, Rejected or Pending. Enter any comments if you have any in the comments box.
Once done, click on OK.
An email will be sent to the approver. If you are an approver, go to your mailbox then look for the email with the subject, "Approval has started on filename"
On the email, click on the link that says "View the status of this workflow".
Once clicked, the page will appear for Workflow Status of the item.
Under Tasks, click on the link that says "Please approve filename" under the Title column.
Enter any comments if you have any in the comments box then click either Approve or Reject.