Oh, it's really strange that it didn't show immediately.

As for selecting duties:
- You can select up to 5 duties at a time.
- Alternatively, you can select 1 roulette.

This sometimes causes you to queue for the previous duty you just did by accident, due to not unselecting it. It's mostly only an issue for new players; once you have cleared all of the duties, there is not much reason to queue for anything other than roulettes, which don't allow you to queue multiple at once.