There's many tutorials out there, but I can include some easy to follow instructions.

It pretty much boils down to(at least how I do it):

IMPORTANT

Figure should be at zeroed pose, or the pose it loads with on frame 1, the final pose you want should be set at frame 15 for the dynamic simulation to work.

 

1. Load V4 (or whatever figure)

2. Load dress

3. Enter Cloth room (scene should be set to 15 frames, 30 is unnecessaary)

4. Creat New Simulation, set the frames to 15 there as well

5. Clothify > Dress (or other clothing)

6. Click Collide Against and add V4 (or other figure)

7. Run Simulation

Now, there are other settings you can mess with on "per case" basis, but it's not that difficult once you do it a few times, it becomes natural to you.

                                                                                                                    

Poser 10

Octane Render

Wings 3D