• Press a configured key (INSERT) to quickly stack items from your inventory into a nearby containers with same items.
• Alt+Click an item in inventory to exclude that inventory slot from automatic stacking.
• Alt+Right Click an item in inventory to exclude that item from automatic stacking (item tooltip will change).
• Inventory slots 1-8, quickslots and equipment slots are excluded from quick stack.
• Container must be closed for it to work.
• You must be owner* of the container

*ownership means the network host, as in your computer is currently in control of the chest, other clients will pass requests to your computer should they wish to interact with chest.

Ps! DO NOT quick stack when other people are using any chests nearby as it can lead to overwriting and dataloss. Itemloss due to the usage of Quick Stack are not refunded.