http://www.renderosity.com/mod/gallery/full.php?image_id=2035024

 

Obviously it's possible to use the cloth room on a figure that's sitting down ;o).

ima70 has the right idea by keeping the figure slightly above the surface it's sitting on. If there's a tiny space there between the cloth and the chair, the cloth is less likely to sink into the chair.

As for the above image: I used two different settings for these dresses - one slightly stiffer for the black one and one heavier and more drapey for the other two since they are velvet. I didn't use any specific formula. I just kept playing with the settings until they looked right. No rocket science there ;o).

Laurie