How do I make NPC walk using pathfind?

Alright, so I can pathfind and I make bricks appear to show a path. Now, how can I make NPC walk here? Here is the code :

while true do
    local path = game:GetService("PathfindingService"):ComputeRawPathAsync(game.Workspace.Stuff.Start.Position, game.Workspace.Stuff.ENd.Position, 200)
    print(path.Status)
    local points = path:GetPointCoordinates()
    wait(1)
    local points = path:GetPointCoordinates()
    for _, point in ipairs(points) do
        local part = Instance.new("Part")
        part.FormFactor = Enum.FormFactor.Custom
        part.Name = "Pathfind"
        part.Size = Vector3.new(1,1,1)
        part.Position = point
        part.Anchored = true
        part.CanCollide = false
        part.Parent = workspace.Pathfind
        path:ClearAllChildren()
    end
    wait(0.1)
end

I would be happy if anyone could help out.