Dragging one part, equals dragging the whole other parts

[LawMixer]

https://streamable.com/d7yt49

Right now, I want to move the yellow box, and not the black box.

local LocalPlayer = game:GetService("Players").LocalPlayer

local Snapdragon = require(game.ReplicatedStorage:WaitForChild("Snapdragon"))
local storeTbl = require(script:FindFirstChild("2dArray"))

local InventoryFunc = require(script.InvMod)

local controller2 = Snapdragon.createDragController(script.Parent.ItemPlaceholder) 
controller2:Connect()

local prevIndex = 0 

local function getIndex(number)
	if number == 1 then 
		return 1, 1
	elseif number == 2 then 
		return 1, 2
	elseif number == 3 then 
		return 1, 3
	elseif number == 4 then 
		return 1, 4
	elseif number == 5 then 
		return 2, 1 
	elseif number == 6 then 
		return 2, 2
	elseif number == 7 then 
		return 2, 3
	elseif number == 8 then 
		return 2, 4
	end
end

controller2.DragEnded:Connect(function(callback)
	local d = script.Parent.ItemPlaceholder

	local closestObj = InventoryFunc:whichSlotisClosest(controller2.gui.AbsolutePosition)
	local indexNum = tonumber(closestObj.Name)

	local overlappingUIs = InventoryFunc:areFramesOverlapping(controller2.gui)

	if d:FindFirstChild("Config").Shape.Value == "Rect" then 
		local indexNumber, indexNumber2 = getIndex(indexNum)

		if storeTbl[1][indexNumber2] == true and storeTbl[2][indexNumber2] == true then 
			controller2.gui.Position = closestObj.Position
			storeTbl[1][indexNumber2] = false 
			storeTbl[2][indexNumber2] = false 
			
			
			if prevIndex ~= 0 then 
				storeTbl[1][prevIndex] = true  
				storeTbl[2][prevIndex] = true  

				prevIndex = indexNumber2
			else 
				prevIndex = indexNumber2
			end
		end
	end 
	
end)

local controller = Snapdragon.createDragController(script.Parent.ItemPlaceholder2) 
controller:Connect()

local prevIndex23, prevIndex12 = 0, 0

controller.DragEnded:Connect(function(callback)
	local d = script.Parent.ItemPlaceholder2

	local closestObj = InventoryFunc:whichSlotisClosest(controller.gui.AbsolutePosition)
	local indexNum = tonumber(closestObj.Name)

	local overlappingUIs = InventoryFunc:areFramesOverlapping(controller.gui)


	if d:FindFirstChild("Config").Shape.Value == "Square" then
		local indexNumber, indexNumber2 = getIndex(indexNum) 
		
		print(storeTbl)
		
	end
end)

[LawMixer]

My hierarchy: https://i.imgur.com/OKBrr8E.png