I’m sure the doors just bolt to the Roxor like any other half or full doors. Each hinge has three bolts.
It may even be as easy as pulling a pin from the hinges to remove a door.
I’m sure the dealer can tell you more (or the private party seller if you’re buying a used one).
Maybe the doors is all you really want to take off. The windshield is always a good idea just to prevent rocks / bugs from landing in your face.