Steps to paint with Smart Brush: 1. Select a category from the editor. 2. Selecting 3D Brush/Cube: Click on Paint at the top panel and select 'Paint with 3D Brush' or use right-click at the type selection.
3. Semantic Paint: To Create Paint Label, Select a class and use left-click to paint a cluster of points. 4. To paint another category change the category type and paint using the cube. 5. Use the 'F' key to start painting. 6. The size of the cube can be adjusted.
7. You can also view the point cloud that is painted in the camera view by clicking on the “P” 8. You need to save by click on Paint at the top panel and then click on save.
9. To erase, hold “e” or click on the eraser icon to erase the paint.