One at the top with his personal anchor and there looks to be one near the middle guy on the pole. The middle guy may also be belaying the top guy- it's not clear. It's also not clear if the rope is anchored at the top of the pole. If the middle guy is actually belaying this would make sense. When he wants to be lowered he will remove his personal anchor and the middle guy will lower him. So we can't really tell if this is a secure setup or not.