You can change what the operator extension is from Settings / PBX and you can forward the call to a Queue or IVR using the extensions forwarding rules. You could also record custom voicemail messages to announce to the callers that they have the option to do that.If they press *, they will go to the operator extension, if used, or to wherever that extension is forwarded.
Founded in 2005, when VoIP was an emerging technology, 3CX has gone on to establish itself as a global leader in business communications.