How can you become a member of a FATE group without running across a map and jumping into a just-spawned FATE? Am I missing something here? How is it possible to spawn a FATE, just like it was a quest?

I am really confused.

As I have two characters who are in the process of collecting Company Seals so that they can have their own Chocobo mount, I would LOVE to be able to spawn a FATE whenever I wanted one.

Please advise....