Queue manager rules are loaded, or changed whenever a queue manager administration message containing a request to update the queue manager rule class is received.
If a queue manager rule has already been applied to the queue manager, the existing rule is asked whether it may be replaced with a different rule. If the answer is yes, the new rule is loaded and activated. A restart of the queue manager is not required.
The QueueManagerUpdater command-line tool in the package examples.administration.commandline shows how to create such an administration message.