When View OS Services, Patches, and Diskless Clients is in the Rights Included column, it grants the right to list OS services and patches using the smosservice command, and to list diskless clients using the smdiskless command. It does not grant rights to add, modify, or delete OS services, patches, or diskless clients.
If View OS Services, Patches, and Diskless Clients is grayed, then you are not entitled to Add or Remove this right.