Thanks to both of you for your responses...
I figured this out finally, and discovered I had 2 issues:
1. The
Section in my form containing the
Field in question, was hidden for editing to the users in the role I needed to grant access to, but only for one of the users in that role So I copied the role, renaming it to something relevant for the new role, then assigned the user to the new role. This made the
Field visible for the user, but did not allow editing even though the role permissions had the
Field set to modify.
2. I then discovered the
Field in the table also had further permissions for the defined
Field itself. After setting the
Field permission for the role to
modify (below), all started working as expected.
My Problem: I mistakenly believed these permissions were linked to the role permissions, and I did not realize editing the
Field access under roles, did not affect the permissions defined in the tables
Field.