How do I create a sub category in the building menu?

[Username0815]

I'd like to create a new subcategory inside the vanilla building hierarchy and thus ask for your advice before I break it  How do I set up a subcategory, so my building objects are listed as for example: wood\walls\mod?

[NeinGaming]

Settlement Menu Manager is what you want; just about any modern mod that adds objects to the Workshop mode uses it, and for good reason

https://www.nexusmods.com/fallout4/mods/24204

[Username0815]

Will give it a shot, thanks.