Check that guys – ElevatorArchitect free plug-in for Revit.
“DigiPara Elevatorarchitect provides free optimized Revit families to easily create elevator models inside Autodesk Revit software. Start the plug-in directly inside Revit and find the correct size and number of required elevators within seconds.”
It helps a lot. Watch the tutorial on Digipara website.
You can choose manufacturer real existing lift and easily implement into the model.