How do I schedule quests at a specific time?

First open Edit Event → Schedule and add a timeline entry. Set its type to Scheduled Quest Unlock, choose its start time, and save it.

Then open Quests, create or edit the quest, choose Scheduled Quest Unlock for visibility, and select that schedule entry. The quest remains hidden until the scheduled time. When it becomes visible, every team can start Level 1.

A Quest Unlock has no duration. Once it starts, the quest stays available for the rest of the event unless you disable it.