There are two main ways to create your elevations. You can use the 3D model to create your elevations, or you can use your 3D model to create 2D elevations.
At the concept stage the first method works really well. The live elevations keep up to date with your model. As you add or move windows, you only need to click on the update button to see the revised elevation.
There is some great protected information here that is only available to paying subscribers. You must be an active paying subscriber to see it, but you can Subscribe here.