1 - Find loot
2 - Press TAB
3 - Click and hold mouse on whatever item in vinicity
4 - Drag and release it on an empty quick slot (actually you can drop it on empty or used quicks, doesn't matter)
6 - Notice that the item isn't functionnal nor in your inventory (you didn't pick the item)
7 - Also, Notice that there is no step 5
(sorry its an old game tester joke) - keep on the good work !!!