Pillar Spawn
pillar_spawn_device teleports every player onto a different random pillar when the round starts. Players who spawn later go to a pillar nobody is standing on.
It finds pillars by their Player Spawner tagged with pillar_spawner_tag.
Adding pillars
Duplicate a pillar together with its Player Spawner. The tag comes along, so the device finds the new pillar automatically.
Players without a free pillar stay in the lobby. Place at least as many pillars as the island's Max Players (16 in the template).