How to install caffe2 for Windows?

I am following this tutorial to install caffe2 for WIndows http://gianni.rosagallina.com/en/posts/2018/10/04/caffe2-gpu-windows-1.html

In Step 2, the author says we have to make changes to build_windows.bat and then he says to make changes to cmake. But are these changes supposed to be written in build_windows.bat (changes like
-DTORCH_CUDA_ARCH_LIST=6.1 and so on as mentioned there)?