I have created checkbox style multiple "Select" fields for AGLS.Audience and DC.Type.documentType in my metadata schema. A default value is not required, as the fields are optional. (If a value does not apply, the field is not filled in.) However, when I edit the metadata of a resource from the front end, I am given the option of a checkbox which says " or - use default" ? Is there any way to stop this checkbox from appearing?