How to add/Remove plugin from Extension warehouse?

How to add/Remove plugin from Extension warehouse?

How to add plugin from Extension warehouse:

From SketchUp do the following:
1. Window menu
2. Preferences
3. Extension
4. Install Extension
5. Choose the rbz file.

How to remove plugin that you installed from Extension warehouse:

1. From search wrrite %appdata%
2. Choose Roaming
3. SketchUp
4. SketchUp 2015
6. SketchUp
7. Plugin
8. Delete the files name "SimLabSolidWorksImporter"
   and delete the extension "SimLabSolidWorksImporter.rb"