Alts can unlock Obsidian Citadel endgame activities and skip the story chapter in the Waking Shores by talking to an NPC.

If you’re leveling an alt, you can talk to Kalendormu in the Waking Shores to skip the campaign chapter and unlock all endgame activities at the Obsidian Citadel. The NPC is located at the citadel on the same level as the Flight Master.