Why does my screen lock frequently? Can I disable screen lock?

The RCE is a service that is remotely accessible, and many users work with sensitive data. Since we cannot guarantee the security of the physical environment around the user's computer, we are required to follow the Harvard information security policy for application availability which indicates that the screen lock timeout should "only be a few minutes."

The Harvard policy mandating screen lock is HEISP 2.6: http://security.harvard.edu/book/26-limit-application-availability-time