Wandering Jim, people split up all the time, so I don't think rangers require that. Each hiker in a group needs to carry a tag on their pack, or a copy of the permit.
Holly, you cannot "buy" a permit that was won by someone else -- they are not transferable. You would have to meet SacHiker before the hike and get your permits that he had already obtained.
Edit: I should add, though, that the hike leader is required to acknowledge they are responsible for all in their group.
Edited by Steve C (03/25/19 09:20 AM)