Welcome @cdeblaere !
The way that I have interpreted how to use the Quality functionality is this way (not even sure if this is what Epicor intended 
).
- Production Worker NCRs a part off of a job with a reason code.
- Inspector reviews part. If it can be reworked, accept back to job for rework. Else reject to DMR.
- DMR reviewed. If it can be reworked, accept back to job for rework. Else reject.
In your instance, I would put the comments on how to rework it in the Accept comments. Then I would instruct the worker to log into the same Operation and click the Rework flag to denote that time as rework.