Why aren policy sets visible for policy domains?
To simplify the process of configuring and managing policy, the Administration Center does not expose policy sets. Instead, you always work with the active policy set. In versions 5.3, 5.4, and 5.5 of the Administration Center, any changes that you make to management classes are immediately activated, without additional effort on your part. In version 6.1, you must activate changes manually. You can prepare the management class in advance and activate the changes at an appropriate time.