Two steps are needed to be humanistic during business hours:
During Business Hours: Ring to an extension of a live human. If that live human does not answer in five rings, then go to the automated attendant.
During non-business hours: Ring directly to the automated attendant. Do not ring the live human’s extension.
So, during work hours, most of the time when people call they will get a live human being saying "How can I help you?’ unless that human is away from their desk.
After work hours the phone rings directly to the automated attendant so that if someone calls in the middle of the night, it will not ring my employees phone buy be answered directly by the automated assistant.
Thank you for your kind consideration.