To edit a point cloud's properties, open the project menu and select your point cloud. Then, make sure the properties tab is active. You will be able to change its opacity, the position and rotation will be locked by default, to make sure that you don't move a georeferenced point cloud by mistake. You can unlock the position and rotation by heading over to the Actions tab and selecting “Transform to resource”, only then, will you be able to move your point cloud freely.
Learn about point cloud attributes in this article.
If you run into any issues, our support team is here to help. Happy exploring!