ShoreTel: Route-Point For Incoming Calls

I had a requirement from the customer to have all incoming calls come in to an AA during business hours, and after hours have all calls routed out to an answering service.  So, I had to do some re-work on this, but what I ultimately did was to create a route-point in ShoreTel Director and during 'on hours', I had all calls forward to my AA.  On the 'off-hours' tab, I selected an internal extension (116).  That internal extension (116) I had set up to forward all calls to an external phone number (answering service).  It cost me a license, but that was ok in this situation.