- Pick the dungeon from the dungeon finder (don't forget there's a normal and veteran list) and wait for a group to form
- Group up with friends/guildmates and enter the dungeon manually
- Enter the dungeon solo
All of these count for the pledge if finished.
And also make sure you have your group preference set to either normal or vet, especially if you are soloing a dungeon.
If I accept an Undaunted pledge, do I physically go over to the dungeon’s location, enter it, and begin? And wait for others to accompany me?