If this is a complete file with head,body, and tail components then you would go to Feral Heart>my_presets>and any folder that the codes have them under. Make sure you read the numbers correctly, don't go and put preset_5head into preset 1 folder or it wont work.
If they only send ya a fph file then that is not for any use for you. That kind would be placed in the Feral Heart>Preset folder