The Cluster Operation profile allows users of applications to access the Sun Cluster graphical user interface. This profile also allows users to do certain administrative operations (withoutany rights to modify data) on the following components of a cluster: devices, nodes, network, quorum, resources, system, and transport. The administrative operations include switching over, shutting down and bringing up services and nodes etc.

If Cluster Operation is grayed, then you are not entitled to Add or Remove this right.