Hi @gregory,
Yes, you can manage grey fields in the new Data Entry app; however, there’s a different way to configure that, please see the video (URL is at the time of the slide: ‘Manage grey field’): https://youtu.be/2Uln3_UZ5ns?t=942
In addition to the video webinar linked above, please go through Retirement of the old Data Entry App and the Tracker Capture app in V42 to learn about transitioning to the new Data Entry app.
Thanks!