Go to Item filter, make sure you've ticked the options "Pick items/gold with character" to the top right.
Then you gotta search for the items you want to pick, click on it and select Pick with character then apply.
There's a guide for the item filter on their forum.
hey guy's !! anyone tell me how to make that bug that pick up super fast! my friend know it! but he dont want to tell me!! when uniqe die and the specail item fall we dont even see it! he pick it without we even see it!! so fast