Witches' Charm Slot Game

So I've seen a few streamers have four charm slots in their bracelet and I can't find by googling how to unlock the fourth slot so how do

So I've seen a few streamers have four charm slots in their bracelet and I can't find by googling how to unlock the fourth slot so how do

witches charm slot Charm Captains Bounty Journey to the Wealth Double Fortune Emperors Favour Witches Tome Atomic Kittens Bikini Island Deluxe Meow Janken Slime Party Fruity

witches riches slot Charm Aztec King Megaways Chicken Drop Phoenix Forge Fruit Party 2 Witches Tome Atomic Kittens Bikini Island Deluxe Meow Janken Slime Party