AllowStack - dniym/IllegalStack GitHub Wiki
CHILD OPTION OF Overstacked Item Protection
Items added to this list can be larger than the vanilla stack sizes, ie Potions/Ender Pearls
- To add an item to the whitelist use the following command: /istack value add AllowStack (ITEM_TYPE)
- To remove an item from the whitelist use the following command: /istack value remove AllowStack (ITEM_TYPE)
This protection has no extra options.