Teleport an NPC into place

In the menus: ESC → Design → NPCs → select an NPC → MOVE

Place the NPC in the world

Select MOVE IN WORLD to see the live NPC as a ghost on the surface you aim at.

Adjust Yaw, Height and Grid with the controls described in place a model, then press MOUSE1 once to move it and return to the MOVE panel.

Nudge an NPC into frame

The CUSTOM POSITION boxes open filled with where the NPC is standing and its facing.

Change one number and select TELEPORT TO COORDS. The NPC snaps to the new spot without walking there.

BRING TO ME puts the NPC 64 units in front of you, turned to face you.

Send an NPC to a saved mark

SAVED MARKS lists every placemark on this map. Select a row, then TELEPORT TO MARK. The NPC lands on the mark, facing the way the mark was placed.

Save a placemark covers making one.

Prefer the console?

/npc teleport has 2 forms, told apart by how many arguments you typed, and both are silent when they work:

/npc teleport <id|targetname|name> <placemark|me>
/npc teleport <id|targetname|name> <x> <y> <z> <yaw>