Can't place anything?

Hey there, I'm not really sure if I'm just a bit confused by the documentation but I can't seem to place or spawn anything. I can get the middle mouse button menu to open, give me noclip and a crosshair, select things in the menu but nothing seems to happen. Right clicking doesn't spawn anything, right clicking on the side of a foundation doesn't either but I don't know how that would apply to spawning animals ect. anyway

Would really appreciate the help in clearing up my confusion, would love to be able to use this awesome mod!

Seems the most recent update has done away with the spawn/build options being able to force place objects

The current build update works fine. Maybe double check permissions