Click once to place the base of the central column in your model, and rotate it to your desired entry angle.
Inside SketchUp, navigate to the top menu and select Extensions > Extension Manager . 1001 bit plugin sketchup
Think of it as your "rapid-prototyping" toolkit for architecture. It excels at generating common building parts—like —but also includes handy utilities for drawing, editing, and managing your model's layers. Click once to place the base of the
Mastering the 1001bit Tools Plugin for SketchUp: The Ultimate Guide to Architectural Automation 1001 bit plugin sketchup
– You may be referring to one of these real plugins: