I was just experimenting with DT, and I found the image submittal process to be a real drag, having to look at each file one by one.  So I wrote a script to speed things up.  Read about and get the script here: http://www.seanlockephotography.com/2014/09/25/submitting-dreamstime/

I added a donate button because people had asked in the past, and I'm short on beer, so it's there if you find the script useful. 

Thanks Sean.

But it seems that you did not see the "Auto-populate" option at Dreamstime?

What I do is that I select on image with all models first, then use "auto-populate for the categories, MRs and PRs and de-select the MRs where there are less than all models in my images. It only saves the info for the last 20 images though, so sometimes I have to re-adjust after 20 images.

@Sean: Never expect the support to know their own website... :-)