: If you have a specific .zip file (like regular-human-workshop-v1-07-zip ), this is typically a mod or a collection of assets. To "make" it work: Extract the contents of the .zip file.
If you are looking to create a "piece" or a custom mod/creation (like a specific item or contraption) for this game, the process generally involves using the in-game workshop tools or external modding methods. How to Create Items for Regular Human Workshop regular-human-workshop-v1-07-zip
Are you trying to this specific v1.07 file, or are you trying to upload a creation you've already made? Regular Human Workshop - Steam Community : If you have a specific
Move the extracted folder into the game's local files (usually found in SteamLibrary\steamapps\common\Regular Human Workshop ). regular-human-workshop-v1-07-zip