Currently in Outlook, you can manage groups and add contacts to those groups, but it is impossible to manage the groups for a contact.
The deliverable is an Outlook Addin/App that will:
1. add a context menu entry for contacts to reach the "manage groups" interface
2. add a ribbon menu entry for contacts to reach the "manage groups" interface
3. add a "manage groups" interface, which will feature:
- a list of all groups the contact is associated with
- an autocomplete search field with an Add button to add groups
- a Remove button to remove the contact from the selected groups
This addin/app should be compatible with Outlook 2010 and using the most forward-compatible technology for addins.