The function 'Edit point elevations' adjusts the height of the selected point elevations and updates the slope arrows. The value given by the user is added to the height of all the points in the selection set.
The appearance of the points and arrow can be set in the New point elevations setup....
MOUS_ICO Menu: Landscape > Levelling tools >Edit Point ElevationsMOUS_ICO Toolbar: Levelling tools – Point Elevations