Is there a way to 'unapprove' a performance review?

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Good afternoon

One of my managers has approved a performance review before meeting with their employee to conduct the review with them.  Now the performance review status is 'eSignature Pending' for the manager and is in the employee's EWS available for them to look at and eSign.

Is there a way for the manager to 'undo' their approval of this review so that it brings the review back to the Pending Approval stage so it is not available to the employee to see the manager's ratings/comments?

Any help would be much appreciated.  Thanks!