Is there a way to have a custom answering rule route to an IVR menu? I tried user extension, but I can't select an IVR extension. For example, for all holidays I would like to have a custom answering rule that routes to simple IVR menu that allows for a greeting to the nature of "Hello. We're closed for the holiday, but if this is an emergency press 9 now and you'll be routed to our emergency response team." If there isn't an official way to do this is there some sort of workaround I could implement?