If you want to let your creature move just spawn it (do .npc add ID) and go to a location near the spawn point. Do .wp add while you have selected the creature / have the creature in target. A waypoint will the be added to your current location, the creature will respawn and move to this new way point immediately. You can now use .wp show on while you selected the creature – the waypoints will then become visible for you.

Of course you can devine several waypoints for this NPC … e.g. my custom quest givers are moving through a shopping center.