There are MSI file editors, that allow you to edit these file so you can make changes, like what you posted here.
Here is a good place to start, if you are looking for more information.
I am hoping that Xerox does edit there files to allow different install folders.
You have raised quiet an interesting topic. Although it may no be necesssary for all but it would be a good feature inclusion.
Just tried installing Xerox Print Driver V4 & Xerox Desktop Print Experience for Windows 10 64-bit. However, the XDPE does not allow you to install on hard drives other than the C-drive. My C-drive is nearly full, and I always install my software, apps, and drivers on my D-drive whenever possible, and leave the C-Drive for the operating system only. Should not be difficult for the driver/XDPE programmers to edit the code to allow installation on any valid drive, not just the C-drive. Can someone pass this along to Xerox driver programmers to allow alternate drive locations for the installation - I can not install the XDPE until they make this change. Allowing alternative drive locations should benefit ALL Xerox customers and provide them much more flexibility during installation. Thanks!