When a model is first created the database is minimal.
You have to use Build the Tables in the Data Design form below. This creates all the tables and queries that are need for a data rich model.
The Fields tab is where you define the data to be associated with objects and instances
Build the tables
Update the database tables to the design.
The Numbering and Rules tab is where you can define rules for each class
Note - the standard ControlDraw reference model has a good collection of rules and field that you can us
The check box 'Extend Parent' makes a class transparent so objects with that class create no instances and any child instances ignore the object thus making them tag as it they are on the same page as the object.
Note - if this is set then all other options are greyed out as they will have no effect
See also Test Sheets