The smart align tool tool automaticallty aligns models to a point cloud. In order for this to work you will need to manually adjust the model so that it is relatively close to the location in the point cloud that you are aligning it to. Once it is close you can select the smart align tool and it will automtically align the model to the point cloud.
Smart Align Tool usage:
Open the project that contains the point cloud that you would like to align the model to
Select the appropriate UCS if applicable
Add a model to the project
Align the model to the point cloud using the manual alignment tools.
5. Select the Smart Align tool
6. Once the tool completes a dialog that displays the transformation information will open
This tool will work in most cases, but may not be perfect when using complex models.