How are the instance-labels of point cloud annotated? And will there be anymore 3D-instance-segmentation-challenge?

[Chan0081]

1. How are the instance-labels of point cloud annotated?
   Are the instance-labels of point cloud annotated according to the 3D BBox automatically or annotated by other manual methods?

2. Will there be anymore 3D-instance-segmentation-challenge?
   I found this challenge but it has no update since 2020. I wonder if there will be another 3D-instance-segmentation-challenge.