How to get a local NPC to move around?

Hello scripters,

I've been having some trouble with putting in enemies/mobs/monsters/whatever-you-call-them into my game.

The problem is in my game everything is loaded locally (think like MeepCity) and the NPCs should be too.

What that means is that I store a simple Vector3Value in my storage and the client loads a mob at that position if it's visible to the player.

How can I make the mob simply move around when it's visible to the player?