Place one where you desire, then have it follow you far enough away then set to stop following. Then place the other one near where you place the first one. Then log off for 15 mins or so and they will reset to the positions you placed them. For bonus effect have the thralls move to a position away from initial location then command them to face in the direction of your intended placement, they should always be behind in relation to the chosen placement to get them to face the direction you desire. It takes a bit of trial and error but works well for having thralls use converse emotes.