it's a square dancing duck puzzle! Interns log in to a Minecraft server, which has a western village. They're assigned a barn number. They walk through the village until they arrive at their designated barn. Two players put on a diamond helmet + diamond boots and are designated Leads. Two players put on a gold chestplate + gold leggings and are designated Followers.
They are given links to two PDF files:
Once inside the barn, they see a dance floor: