Posing question for a multiple seat objects with multiple poses per seat

I am working on a two seat device, each seat has a pair of animations that I need to have the chair be able to switch between based on external conditions, To make this more dificult, to properly align the Avatars while sitting each pose requiers a different set of values for llSetSitTarget().

What method should I use to allows the llSetSitTarget() value to be changed while an Avatar is sitting, and have that Avatar's position change accordingly?

What method allows for the change in the pose of an avatar once they have Sat on something (When I try to chang ethe llStartAnimation, I get the Permisions popup)?

I know that the first can be accomplished by repositioning/rotating a poseball, however I am trying to keep my Prim count low, and do not want to add the 2 poseballs if I can avoid it.

I have seen Pose stands with multiple poses that force the Avatar into different poses, So I know that it is posiable (I just cant figgure out how they do it

Thank you in advance
Lor Goodliffe

You can't change the sit target while the avatar is sitting (or more accurately, you can change it but it doesn't take effect until the avatar has sits on it again). IIRC what you can do though is have the offset as part of the animation.

As far as I know there's no way to animate an avatar without requesting permissions first. The good thing is that you only have to request them once though.