In some cases, the Chief Engineer can't even touch the processing. I have been part of this scenario many times. Sure, he may install and maintain all of it, but the adjustment duty may be given to someone else. Sometimes corporate leaves that up to an outside consultant (for example Jim Lupas). The decision of who adjusts it, varies from station to station, and cluster to cluster. It also depends on who is ultimately calling the shots. Is it the PD, GM, Corporate PD, Corporate Engineer, local Chief Engineer, etc.? Sometimes the Chief Engineer is happy to leave this job to an outside source, so he doesn't have so many people breathing down his neck, regarding the particular sound of the station. One of the problems is, is that there are so many opinions to what the processing should sound like. In my opinion, he takes more time and effort to make a station sound louder and cleaner, than it does to make it sound louder and grungier, or more dense. One of the reasons I now prefer listening to the audio webstreams, over the OTA signals (for home listening), is they seem to be processed much more lightly (since no one seems to put as much attention to them, and most stations will only spend so much on processing equipment for them - usually the Orban card - which is a fine card), as compared to the OTA (over the air) signal.