Dynamic configuration, need more info, so far I know some changes involve the deployment/restarting of the configuration. For example If I change the DocumentRoot of a virtual server I dont want to do a full restart of the configuration instance affecting all others virtual servers.. I just want that what you call dynamic config..
you can run 'bin/reconfig' - this will make any changes (that does not require a restart) available to the running server (this includes all virtual servers configured within this server instance) without requiring a restart - i mean without any downtime
no, there is no way to make dynamic reconfig work only for a single virtual server. but i guess, what you care most is - ability to modify a setting for a virtual server without disturbing other virtual servers - 'bin/reconfig' is probably what u r looking for.