Can't install to alternate drive

The installer for Etcher does not give the option to install anywhere else. It is hard coded to install to drive C. This is a problem. I cannot use the tool this way. Drive C is a VERY VERY small drive. I need to install to a different drive. Windows 10 btw.

I just looked at the windows installation and indeed there do not appear to be a lot of options to choose from. I will contact the engineers to see how your problem can be helped .