How to Quick-Trade with Villagers Using Mouse Buttons
Trade a single offer with right-click
Open a villager's trade screen and right-click a trade to complete it quickly. The mod handles moving your payment and collecting the result, so you don't have to manually place items into the trade slots for every transaction.
Bulk-trade with SHIFT + right-click
Hold SHIFT and right-click a trade to repeat it as many times as your stock and the villager's supply allow. This is the efficient way to convert a large pile of emeralds or farmed goods into the item you actually want, without clicking through each trade one at a time.
Keep an eye on villager restocks
Villagers have limited trade uses before they need to restock at their workstation. If a bulk trade stops partway through, the villager has likely hit its limit rather than the mod failing.
Make sure you have enough payment
Bulk trading consumes your payment items rapidly. Before SHIFT right-clicking, confirm you actually hold enough of the currency in your inventory, otherwise the trade will only run as far as your materials allow and then stop.