Well, it could be like "watering the field." The doctors do it on their own, but you can still select other villagers to help by picking them up and bringing them to a skelaton.

If it was a memorial service, then they should all gather at the graveyard, not try to pickup a skelaton and then shrug and go on to their next task. (Yes, I know you were just trying to make sense of it, like the love shack/maternity ward/fertility clinic, but the way they all stop to bury the dead does get tiresome...

I especially feel sorry for when some of the skelatons are brought to the graveyard and the GC calls a party. The people just drop the skelatons on the spot and start dancing!