Mosiah 29:39

Therefore it came to pass that they assembled themselves together in bodies throughout the land, to cast in their voices concerning who should be their judges, to judge them according to the law which had been given them; and they were exceedingly rejoiced, because of the liberty which had been granted unto them.

So they gathered in groups throughout the land. They voted for who should be their judges. These judges would judge them by the law they had been given. They were very happy about the freedom they had been given.