When sitting on the ground, the very good "cross-legged" posture is incorporated as standard, but it will sink in the ground in the process which sits down.
and it is not reproduced on an object.
In such a case, custom-animation is incorporated.
but many of the products only make a posture.
I made the animation which reproduces movement until it sits down.
My product will reproduce movement which can fill you.
Try out the demos at
Headquarters("Oi-Ei"

http://slurl.com/secondlife/Sede%20di%20Marte/99/193/37/
MaHoRoBa
http://slurl.com/secondlife/Shaka/117/176/25
And "Nagaya" "MoNaCa"