A method and respective system for performing a reconfiguration of a plurality of resources, where the resources reside on multiple different system platforms including a mainframe with a policy-based automation manager. A reconfiguration method with an improved switching facility between such configurations is provided by using a predefined automation choice group as a part of a predetermined automation policy, pre-selecting one group member as preferred to be activated in case a predetermined automation choice group is determined for operation, providing a user interface for triggering a reconfiguration of the resources according to the automation policy, and initiating an automatic change from a first resource configuration into a second resource configuration when the trigger is actuated.