Hi,

You can create a new user group named Edit Validation field, and later you can add the users who need to edit the field to this group.

Now in the view level, you have to make this field readonly for all users initially, can be done by settings readonly="1" in the main view.

Now in order to edit for the user in this group, create an inherited view, set group for this view and remove readonly attribute from the field.

Similar use case: https://www.youtube.com/watch?v=Fsp6lAPHz08

Thanks