Can anyone explain how the people listed for support eidolons works? I've been monitoring it for a while and I can't find a rhyme or reason for how the background coding works. There have been times where I can select the same friend 2-3 times in a row, while other times there's a friend who I want to wait to use then after 1 fight it's randomly gone. How does the game generate who you can choose to pick as a support Eidolon?