How to create draggable parts like building tools?

I have a scripted tool that lets me create parts then move them as accordingly to my desire but I want to be able to allow dragging like real functional building tools. Let's say I have a part which is one of the spheres (that represents forward), how would I make it that if I wanted to drag it, it would keep moving it?

Here is a basic idea of my script, it should be simple to understand:

local part = Instance.new("Part")
part.Position = Vector3.new(0, 5, 0)
part.Size = Vector3.new(2, 2, 2)
part.Parent = workspace
local sphere = Instance.new("Part")
sphere.Name = "LookVectorSphere"
sphere.Position = workspace

local increment = 1

local function movePartForward()
	part.Position = part.Position + (part.CFrame.LookVector*1)
	sphere.Position = sphere.Position + (part.CFrame.LookVector*1)
end

This is just an example to make it clear and easy of what I'm asking so I will only be asking for that one sphere example I gave.

-- The following script allows you to move the part, but not Up in the Y axis because I'm too stupid for this one...

----------------
-- LocalScript
----------------
local PlayerMouse = game.Players.LocalPlayer:GetMouse()
local DraggablePart = game.Workspace.DraggablePart
local PartPositionEvent = script.PartPositionEvent
local Draggable = false
local Target = nil


PlayerMouse.Button1Down:Connect(function()
	Draggable = true
	repeat
		wait()
		if PlayerMouse.Target == DraggablePart then
			Target = PlayerMouse.Target
			Target.Position = Vector3.new(PlayerMouse.Hit.X, 1, PlayerMouse.Hit.Z)
			PartPositionEvent:FireServer(Target, Target.Position)
		end
	until Draggable == false
end)


PlayerMouse.Button1Up:Connect(function()
	Draggable = false
end)
----------------------------------------------------------------------------------------------------------
-- Inside the Local Script put a Remote Event

-------------------
-- ServerScript
-------------------
script.Parent.OnServerEvent:Connect(function(player, Target, PartPosition)
	Target.Position = PartPosition
end)
--[[
 You basically get the PlayerMouse's Target and if the target is THIS PART then
 allow the Position of this target to be the Hit of the mouse which the Hit is 
the position of THIS PART...

Well. That about covers what I can do for you.
--]]