If you go to the root document (which is a master page) i.e Dancing goat - switch to the design tab. In the 'zoneContacts' there is officeContacts web part which is a repeater. Take a look at the properties of this web part:
The repeater gets documents of type DancingGoat.Office under path /contact/. if you go there - there are 3 documents:
- North America
- Office in Europe
- Office in Australia
Click on any of them swith to form tab and there you go.