Go to Authoring module > Content review.
​Result: You will see the list of review tasks assigned to you.

Click on a task that has the status Live, and for which you have not yet reviewed all items. You can see your review progress in the column "Items reviewed".
​Result: The detail screen of the task is displayed.

Click on the first item you have not marked as reviewed yet.
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Note: As a reviewer, you can only navigate to the previous or the next item in the list, so it is recommended to review the items in sequential order.

Result: The item is displayed and contains 4 tabs: Item, Feedback, Score, and Properties.

On the Item tab, review the item content and add any comments you may have in the comments bar on the right.

Click on Feedback, review the feedback that is available on item level, and add any comments you may have in the comments bar on the right.

Click on Score, review the score settings for the item, and add any comments you may have in the comments bar on the right.

Click on Properties, review the metadata and other properties of the item, and add any comments you may have in the comments bar on the right.

Check the check box "Item reviewed" at the bottom of the screen, and click Next to navigate to the next item.

Repeat steps 4 to 8 until all items have been reviewed.

On the detail page of the review task, click "Finish".
​Result: A warning message appears, asking if you are sure you want to finish the review task.

Click OK.
​Result: You will no longer be able to open the items in this task anymore, and the author will receive an e-mail saying you just finished the review task.
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Note: The status of the review task will remain "Live" until the author closes the task manually.