For more information on how to distribute a program by group policy, see the Microsoft support page:  
<https://docs.microsoft.com/en-us/troubleshoot/windows-server/group-policy/use-group-policy-to-install-software>  
  
The installation package supports the standard Windows Installer switches, see below.  
-q, -quiet, -s, -silent = silent install   
-passive = progress bar only install   
-norestart = suppress any restarts   
-forcerestart = restart no matter what  
-promptrestart = prompt if a restart is required (default)   
-layout = create a local image of the bootstrapper (i.e. download files so they can be burned to DVD)   
-l, -log = log to a specific file (default is controlled by bundle developer)   
-uninstall = uninstall   
-repair = repair (or install if not installed)   
-package,-update = install (default if no -uninstall or -repair) 

Unfortunately, you cannot control the device letter via GPO.

Installation links (Download the top one and add 32/64-bit):

<https://secure1.storegate.com/public/storegatecloudfolder/windows/StoregateCloudFolderInstaller.msi>

<https://secure1.storegate.com/public/storegatecloudfolder/windows/StoregateCloudFolderShellExtensionInstaller_x86.msi>

<https://secure1.storegate.com/public/storegatecloudfolder/windows/StoregateCloudFolderShellExtensionInstaller_x64.msi>