[TYPO3-mvc] n to n relations

[Rens Admiraal]

How can we achieve the following within the kickstarter?
I have to objects: ‘Person’ and ‘Group’. This should be a many-to-many  
relation. So a person can belong to one or more groups. A group can  
contain one or more persons.

I also like to register for a person which group is the default group.  
Now inside a relational model this would be a many-to-many table with  
the following fields: PersonId, GroupId, Default.
How can I do this inside the ExtBase kickstarter extension? Do I have  
to create an object for the many-to-many table?	

With kind regards,
Rens Admiraal
TYPO3 Certified Integrator