Disable auto transfer for check-ins and a redwood page to manage check-ins

We are facing security issue across redwood check ins and performance documents.

Customer is currently implementing redwood for check ins and performance documents. As part of the process, new manager should not view employee`s old performance document evaluated by a different manager. Previously ,Managers used to access direct reports performance document (as they were only using standard performance document and NOT check ins)via Evaluate Performance link and everything was working fine. We disable the auto transfer profile option and requested them use evaluate performance link to access the direct report performance document. But now they created check ins and would like to make use of check-ins without compromising on security,