Referencing a Group (XML Schema)
When a diagram group is defined, its aim is to be referenced.
To reference a group in the schema editor:
1. Select the group element in the left part of the schema editor.
2. In the right part, select the References tab.
3. Select Referenced element and click the Connect button.
4. In the dialog box that opens, find the group to be referenced and click OK.
See "Attribute Group Template".