HOW TO: Introduction to Plugins in SketchUp: JHS Powerbar & 1001 Bit Tools
HOW TO: USING EXTENSIONS IN SKETCHUP
1001 BIT TOOLS
https://sketchucation.com/pluginstore?pln=1001bit_freeware_v1.0.3
JHS POWERBAR
https://sketchucation.com/pluginstore?pln=JHS_Powerbar_2019