How to make some ghost walk across a map?

Wow, man, you're a very curious person! I'm answering all your questions, so feel free to ask more, xD! Answered 2 already, xD! Here's how it works: We obtain the AI, we get the humanoid, we make the point where we want it to go, and we make it go there using MoveTo(position)

Step 1: Get the Point,AKA the place where the character walks to. Create a part in Workspace, name the part "Point" move the part wherever you want the AI to go.

Now let's get to work!

-- Regular script

function AiMove()
    local Point = workspace.Point.Position

    local AI = workspace:FindFirstChild("Artificial intelligence") --[[ Put the name of the AI here, or         name it to Artificial intelligence, either one works. --]]

    local human = AI.Humanoid
    human:MoveTo(Point)
end

Now, this makes the AI move using a function, HOWEVER, we got to make the function activate now. Let's do this when the player joins, to make sure the ghost doesn't start moving when they're loading.

game.Players.PlayerAdded:connect(function(player)
    player.CharacterAdded:connect(function(chara)
        AiMove()
    end)
end)

Now, the AI will move when the character has been added.

Hope I helped, remember to ask for more help if you need it, tell me if it worked, or accept my answer! Good day =)