Implemented in https://github.com/archivesspace/archivesspace/pull/1073

- a fix went in to remove Sort Name from the list of possible required fields and to change its default back to being checked when a new record is created.

We're checking into the other issue, of there being two sort name fields for some types of agents, but may hold off on that one for now because there are a whole bunch of new fields and changes to be made in the data entry forms for agents once that part of the agents specification goes in later this year. No matter what, the end should be in sight for that annoyance.

Tested in test.archivesspace.org with all permission levels. The Edit Required Fields button only appears for admin users and repository managers. Was able to add fields to the required fields for each type of agent.

Tested with all permissions. As expected the Edit Required Fields button only shows up for System Administrators and Repository managers. For the other permission groups, locally required fields are indicated as expected.

When creating a new agent record with a locally set required field, you can't save the record unless the field is filled out. However, once the record is saved, the user can go back and delete the locally required field and save the record.
Not a complaint, just something that likely should be documented as an expected outcome so you don't get bug reports.