Add Manhole
Function Description: This tool enables manually add manhole covers.
In order to obtain the plane position correctly, users need to turn on the mouse hover.
Steps
1.In the Road Facilities panel click on the drop down sign on the right and select Add Manhole 
button.
2.The graphics to be drawn will be displayed on the mouse in real time. Place the mouse at the center of the point cloud, use the shortcut key to rotate, use the right mouse button to bring up the dialog box to adjust the size, Double-click To determine the current vector.
Renderings
Note: Shortcuts:Right mouse click to resize the object