The User Editor allows you to edit attributes of GemStone users. However, attempting to edit the default security policy resulted in an error indicating you do not have privileges to change this.
Being a member of DataCuratorGroup allows editing the default security policy.
Alternately, use GemStone Smalltalk code directly to perform this operation. For example,
(AllUsers userWithId: 'john_smith') defaultObjectSecurityPolicy: nil
Last updated: 7/13/16