How to change visibility of a field

Hi again,
I am trying to figure out how to make the visibility of a field to be set as "hidden" while the record is in the "edit" view?
I don't want a user accidentally deleting a Unique Key.
Thanks!
I am trying to figure out how to make the visibility of a field to be set as "hidden" while the record is in the "edit" view?
I don't want a user accidentally deleting a Unique Key.
Thanks!