Upload directly to or move between TRAIN, VALID or TEST

I was used to Roboflow splitting the images automatically into TRAIN, VALID or TEST during upload. But now I have no choice anymore, everything goes to TRAIN and I haven’t found an efficient way to move multiple images to another collection after upload either. All I could do was moving them individually which looks a bit tedious to me. Any tips?
I’m using the latest version of Firefox.