If you are on Windows 10, Photon should have been correctly enumerated without you having to manually assign usbser. Does that not happen after the installer runs the “Uninstall previous drivers” section? (you may have to unplug/plug it back)
The second interface (Photon Control Interface) is not actually a COM port, but a WinUSB interface for vendor requests, and should also have been automatically enumerated by Win 10 with WinUSB driver. It actually even shows that in Zadig: WCID (checkmark) WINUSB.