It's under the crown button, I think. Some of them are global ministers (turn them on and they do their thing), some individual ministers (turn them on and then you can selectively put individual ships/planets under their control).
dumbluck, thanks for responding - I presume dumluck junior is still keeping you up
thanks also for responding on the tactics - I hopefully will get time to surf the forum and read these threads
I tried the button you are referring to (I think) when trying to set up the transport minister but it didnt seem to work - anyone know how one know's if your minister is set up?