I can't say whether or not it would be extremely difficult for you to pick up.
All I'm saying is we're here more for support then to walk someone through programming any system from scratch, experienced or
inexperienced. I do suggest that you find a local Tech. It won't take that long or cost that much and you'll establish a new working relationship where the Tech. may be willing to show you some of the basics. [Linked Image from sundance-communications.com]
You had made mention of "your client", are you actually saying that you were willing to reprogram the system & voice mail and not charge them anything? [Linked Image from sundance-communications.com]