Hello all, I created a video tutorial doing what I couldn't find the answer for, hopefully it helps someone out.
Steps =======
Get lstools (see notes)
Extract Main.pak somewhere outside of your D:OS directory
Create the folders "Mods\Main\CharacterCreation" under your "Divinity - Original Sin\Data" directory.
From the extracted PAK files, copy a file from "Unpack\Mods\Main\CharacterCreation\HenchManPresets" into your "Data\Mods\Main\CharacterCreation\ClassPresets"
Start the game and select the preset with the hireling file you copied.
Notes ======= You'll need the newest version of lstools Thanks to Norbyte for this.