Z3 Schema Editor will let you Open a Workspace file and edit its inner schema. However, doing this may break your Workspace. In particular, you cannot add/edit/delete any countable or container levels or fields, or delete anything. (If all you want to do is enable counting at the Genus level, for example, that is fine.) Once you have created your Schema, the way to add Report Types and Species Lists is to create a New Workspace based on your schema, add Report Types, import Species, and then change the extension on your Workspace file to z3s. It now acts as a Schema, but if you have added any Species Lists, those data tables will cause errors if you break the restrictions above. The Field definitions are used directly to define SQL fields. Errors in syntax will not be detected until you try to create a New Workspace based on your schema. Enclose the "Default" field in single quotes like 'My Default Value'. For numeric fields, you don't need quotes.