Add Button to Control Who Can Listen to Calls (Management Option)

An example

Candace calls hr to ask about the best way to deal with the employee situation. Who should be able to access call. All employees of a specific role are recorded and available to all, if in management or directors, then only available to specific individuals; however, on occasion, management or directors will make a normal call, which should be available to all. How do i accomodate for this.

In other words, if I am a specific user, I want the ability to restrict who can listen to call.