I hoped that llSetLinkPrimitive would give me the possibility to sit several avatars on one prim, moving the different avatars around by setting their positions. I understand I should not set a sit target.
But what are the rules to avoid a "No room to sit" message ? I know that making an object phantom makes it already unsittable. What are the others ? I really would like to use one simple ball shaped prim to sit many avatars. Is this possible ?