Some people puts up a download so others are able to see the preset, not use it.
But if you have image files and a material file you know you can use that preset.
First look what the materials name is, if it is preset_3 then put it and the image files in FeralHeart my_presets -> Preset_3 folder. If the name is preset_5 put the files in preset_5 folder.
Then open your game and write your username,then go to Tools and preset maker, click on example preset 3, if that was the preset you just downloaded and then export.
After that, log on the game, use a char and click on IV and then Use Preset.
Then just chose the preset you want and click OK.
