can somebody explain to me what this group A and group B thing is??
Group A and B or C are filming in different locations, GJM is handling Group A, while his assistant directors are taking care of the other group. In filmmaking, it's pretty common to split into multiple units like this to save time and make things more efficient. Gjm usually focuses on the key scenes, while assistant directors handle the smaller or less crucial shots. This way, they can film multiple scenes at once, to keep things moving, and avoid wasting time, especially in big productions like this
https://mydramalist.com/photos/JBeQEl_3