Edit the elevation of point clouds

Hi Guys,
Is there a way to edit the elevation of point clouds. For example, after selecting a few point clouds then I minus their elevation by 20 meters.
I realized the recorded elevation by drones are off by +20 meters.
Please help. Thanks.

Hi there.

Make at least 3 manual tie points and evenly spread them in your project. Change those tie points to 3d gcps and alter the elevation of those gcps by desired height. Reoptimize and now your point cloud should be in that elevation that you used in 3d gcp.

Thanks Jaakko.