::::Like the UEFA who never announces how they form the groups in the Europa League qualifying ;-) In Germany it's quite simple: We have 21 regional football associations. Each of them has got its own cup competition for its amateur teams. The winner of each cup (+ 3 runners-up from the largest associations) qualify for the german cup of the next season along with the teams of the first and second bundesliga and 4 Teams of the third league so that "only" 64 Teams are in the "DFB-Pokal". But I think the English cup system is very interesting, with the replays if a match is tied and the open draws without seeding.