Installation
Run Rogue Trader first, if you haven't already, so the user profile LocalLow folders get created.
Download the related zip for the mod you want to install, and extract it to this folder:
%USERPROFILE%/AppData/LocalLow/Owlcat Games/Warhammer 40000 Rogue Trader/UnityModManager
The resulting files should be like this:
UnityModManager/MoreInfo/Info.json
UnityModManager/MoreInfo/MoreInfo.dll
UnityModManager/MoreInfo/OwlcatModificationManifest.json
In-game, hit CTRL + F10 to open the mod menu, and confirm the mod is loaded/enabled.