Offline Installation OpenRail Overhead Line Designer

Hello

Please advise, is there a way to install OpenRail overhead line designer offline.

The current method only avails a 2MB installation file which pulls the rest of the installation file online (over 8GB)

I have training for 10 people and would like to deploy to each machine directly offline as the downloading is time consuming via the online method.

I already have the working version installed on my machine, how do I use this downloaded files to install on another machine?

Thank you