How do you add muiltiple instances of field groupings into your profile

New to Drupal and having some issues with content profile.

Is there a simple way to set profile fields, and their groupings, to unlimited rather than a single instance?

What I need is to enable users to add unlimited instances of profile content - eg. add as many Vehicles to the Vehicle section, Pets to the Pets section, etc - all of which are organized within users profile.

This might be something completely elementary that I am missing, but would appreciate the assistance. :)

Thanks