need help to setup group farm

[hapile]

i boting 4 acc, and set 3 acc give lengendary 1 acc to pick up ( stay in town) but 3 acc alway sent legendary to their stash, anyone can help with this? can give me a photo with correct setup setting?
and when i Optimize all account, its alway get bugged in ~30min, some acc not join party, some no move, any fix?