Set your items to be 'approved', 'reviewed', 'ip', 'on hold' etc
For each item you can set the status for an item from within the review, using the dropdown menu above the item. You'll need to be given the appropriate permissions to approve items.
You will be able to see/review these statuses in the project overview both in table and list views - either written out, or as color indication bar on the left border of each item.
Setting Status on Multiple Items
In the project overview, you can select multiple items in the table view and select a status to apply to all selected items.