HCM Data Loader template for a DFF on Manage Employment page

Summary

We are now using the HCM Data Loaders instead of the previous Spreadsheet loader and I am having issues finding a template

Content

We changed over to HCM Data Loader from Spreadsheet loader (which was super easy). I can't find a template for what I need to do. We have a DFF on our Manage Employment page for our Bill Rates. I am in the View Business Objects under HCM Data Loaders but none of the ones listed seem to be what I need. What I need is the ability to add a Assignment Change for several hundred employees changing this one DFF data.