How to Enable DFF in Terminate Employment Redwood Page

Summary:

Prior to enabling Redwood in HCM, we had a field called "Regrettable Termination" that was populated during the Terminate Employment process. This field was located in the Work Relationship Details. Following Redwood enablement, this DFF is no longer available or visible in the process and I cannot figure out how to add it back. I've checked in Visual Builder Studio, but I am not able to find it within there. I will attach a document with screenshots. Are you able to offer instructions for how to enable this field (and possibly other flexfields) within Redwood processes?

If there are better or more effective ways of adding fields than what we've done pre-Redwood, I'm open to any suggestions!