Redwood -To restrict HR to view Performance Document contents

Summary:

We would like HR to not to see the content of employee's performance document but still should be able to perform actions on the performance document such as cancel , delete , transfer the performance document to the new manager etc.
Earlier in responsive we made name fields within search results read only using page composer. But ,it no longer works in Redwood.

We started exploring Visual builder where we can find that there is a option to make the field read only but the option is disabled.

There is an option in business rules and when we created an extension rule , there is a read only column available , that column is locked.