Well i was just wondering So to get it to move like helperbot from welcome to roblox building
Your question isn't very detailed but I'll try my best. You can use the :MoveTo method on the NPC's humanoid.
http://wiki.roblox.com/index.php?title=MoveTo_(Method)/humanoid
You could then introduce a loop so the NPC could walk on a certain route repetitively. Super Basic Example:
humanoid = Workspace.mybot.Humanoid part1 = Workspace.p1 -- Just a part in workspace. part2 = Workspace.p2 -- Just a part in workspace. part3 = Workspace.p3 -- Just a part in workspace. while true do humanoid:MoveTo(part1.Position, part1) wait(3) -- How long it takes for him to get there? humanoid:MoveTo(part2.Position, part2) wait(3) humanoid:MoveTo(part3.Position, part3) wait(3) end