How to load points cloud as a component ?


I’m improving a virtual visit of a historical site. I am working from an unreal project made by other people and I am facing some problems.
I work with points clouds and a part of it was missing, so they used a Landscape (type) to complete the hole.
I now have the full point cloud and I try to replace the landscape with it.
I try to create a new component Lidar point cloud but I didn’t find how to load the pointcloud in it.

Can you please help me ?
Thank you for your help.