On document type feature, the schema section of the first tab should be moved on top of the schema tab, to make the experience more consistent: user configures schemas in the schema tab, either by using existing ones or declaring a new one.
The Schema tab would be separated in 3 sections:
- Inherited schemas: depending of the type you've extended
- Add existing shemas
- Declare new schemas
|Display the "Extra schemas" in document types||Resolved||Unassigned||