Greetings Atlassians! I am trying to solve a complex solution and will have to use my "phone a friend" option. 
I have a text (single-line) custom field on an existing screen that needs to be uneditable by all but the members of an organization group.
If you are not a member of the Org group, you can see the custom field but cannot edit its value. However, you can edit the custom field if you are a member of the Org group or a Jira Admin.
I have tried several approaches, but no solution is in sight. Have any admins run into this problem before and have a solution?
I sincerely appreciate the help, ideas, laughter, etc. There must be a way, but I can't find it. Are there any takers?