Simulations are no longer created during import. Instead the simulation information is stored inside the imported meshes, and can be recreated with the Advanced Setup > Simulations > Make Simulation tool. See the documentation on the Simulation Section for more information.
Many modern clothes use dForce, which simulates draping and movement of garments in DAZ Studio. The corresponding feature in Blender is cloth simulation, which has been considerably improved in Blender 2.90. For some time, Alessandro Padovani has nagged me about including dForce simulations in the DAZ Importer, and finally I got around to do it. Actually, this is not the first time that I attempted to do this, but the previous attempt was half-baked and never took off. Thanks to Alessandro's excellent help, this time things worked out better. We can now import dForce simulations in a useful way with the development version of the DAZ Importer.Global Settings, otherwise everything simulation-related will be ignored when the file is imported. We then proceed to import the DAZ character as usual. This file contains a Genesis 8 Female with Toulouse hair and the Bardot outfit that ships with DAZ Studio. The Bardot outfit is dForce compatible.
Select the body mesh and open the modifier tab. The body has a new collision modifier, which means that it will act as a collision object. The modifier settings are found inside the Physics tab if you need to change them. The DAZ Importer changes some settings, mainly it increases the collision quality.
The top and skirt also have subsurf modifiers, but the simulation seems to work better if you delete them. This improved performance from 0.25 fps to 0.30 fps on my machine, and also made the end result better. Perhaps this happens because the Bardot skirt is already a high-poly mesh.
Here is the pin group for the Bardot skirt. The blue region is fully affected by the simulation, the yellow region only slightly.
The next step is to load an animation. I used the file provided by Alessandro.
Alternatively, we can add a Smooth modifier and change the Repeat value to 5.
Here is the simulation at frame 80, without and with the smoothing modifiers.