change field dominance?

Hi, sorry - this is probably a stupid question,
But I am working in in DR studio 17.1.1 at a different facility to where I work normally, and I am trying to flag a few archive clips to upper field first to enable deinterlacing, but when I go into the clip attributes, the option is not there.
Any chance anyone can point me in the right direction?
screenshot attached of what I am seeing in the clip attributes, I think it used to be above the alpha mode? I have tried enabling and disabling field interlace processing.
But I am working in in DR studio 17.1.1 at a different facility to where I work normally, and I am trying to flag a few archive clips to upper field first to enable deinterlacing, but when I go into the clip attributes, the option is not there.
Any chance anyone can point me in the right direction?
screenshot attached of what I am seeing in the clip attributes, I think it used to be above the alpha mode? I have tried enabling and disabling field interlace processing.