Follow these steps to change the height of points in Design.
Right-click on the point in the scene and choose Set height. The shortcut for setting height is H. You can also use the selection tool or the shortcut CTRL and select all the points you want to change for example Ctrl+A.
In the right panel, the Set elevation function is displayed, showing how many points are selected.
Choose the mode that should apply to the height adjustment: Height, Relative height, Asset.
Depending on the mode, enter a new height in meter and click Update points.
If you want to give the same height to a point as another point in your geometry, you can use right-click "Snap to point."
Click on the point with the desired height and draw a line to the point you want to have the height value.
Right-click on the point and choose Resnap point. The point now has the same height as the point you started from.