[Admins]

If you want to attach a player to an npc then add some server-side script, like if (created) this.isadummynpc = true; so that the server doesn't remove it from server-side. It is normally removing npcs without server-side script and is only keeping the position and client-side script for sending it to the client, so there are less npcs to handle. But if you want to attach the client to it you should make the npc exist on server-side. You see what npcs exist on server-side if you watch the local-level-vars thing (button on the RC).