Let me think...O.K. Did the box come with instructions?
You buy something and now you want free advice on how to make it work when you have all the manuals in front of you?
Would you like one of us to come to your house and do it, or can we just set up the same thing here in the shop and then call you on the phone.
RTFM When you finish, if you have any specific questions on points you get stuck on, then ask your question. Until then, you're on your own, as you wanted to be when you bought the "do it yourself" phone system.
The quick answer to your question is found in the BVM integration. Try it first.
LkEErie