Dropping one tile at a time is very tedious, is there a way I can drop more than one, like a group of 4 or 9?
On a tile layer or on an object layer? On a tile layer, you can place multiple tiles at the same time by capturing a larger stamp, either from the tileset view (left-click-drag) or from the map (right-click-drag). On an object layer you can’t currently create more than one tile object at a time.