Click 
on the toolbar or View > Show to display objects in the scene by category. This operation turns on the visibility of the chosen object categories.
Click 
on the toolbar or View > Hide to hide objects in the scene by category. This turns off the visibility of the chosen object categories.
In both menus, the options include:
- All
- Point clouds
- Sections
- Meshes
- DTMs
- Measurements
- Curves
- CAD 3D face edges
- Points
- Lights