HOW DO I INSTALL DIBAC FOR SKETCHUP? Please extract all the files from the zip file to your computer and follow these steps to install the plugin: 1. Open SketchUp and go to Window > Preferences (Microsoft Windows) or SketchUp > Preferences (Mac OS X). 2. Click on Extensions (from the left column). 3. Click on the Install Extension button. 4. Locate the Dibac RBZ file on your computer (.rbz file). 5. click Open and accept the alert and the confirmation message. 6. Dibac will show on the list of extensions and will be ready to use.