Mouse Tweaks Mod 1.14.4/1.12.2 replaces the standard RMB dragging mechanic, adds two new LMB dragging mechanics and an ability to quickly move items with the scroll wheel. Everything can be enabled and disabled in the configuration file or in Forge’s mod options menu.
How to use:
Very similar to the standard RMB dragging mechanic, with one difference: if you drag over a slot multiple times, an item will be put there multiple times. Replaces the standard mechanic if enabled.