Well, the next thing I'd try next is to get in touch with the manufacturer of the Remote Start device and talk with them on its options and limitations. Can you get to the "box"? It should have a name or serial number on it. Then you can google it, talk to a tech of its manufacturer, and get the answers you need. Then if the answer supports your requirements, either go back to the dealership that installed it and have them talk to the manufacturer of the Remote Start, or, find another authorized install shop that the manufacturer should be able to provide you with in your area.
It is better to keep your mouth closed and let people think you are a fool than to open it and remove all doubt.