Question: how to install prfpset in premiere?
Answer: Close Adobe Premiere CC.
Copy the "GSG_LUT_Files" and "GSG LUTs.prfpset file into a permanent folder on your hard drive.
Open Premiere CC.
In the "Effects" tab, right click "Presets" and choose "Import Preset"
Navigate to the "GSG LUTs.prfpset" file and select it.