How do I add multiple postal addresses for a contact in Outlook 2011 for Mac?

Hi

I am trying to input contact details for people with several work addresses, all of which need to be there in order to utilise the calendar functionality properly.

The options you have for addresses to add are 'work' and 'home'. I need work 1, work 2 etc but I am unable to work out how to add more than one address. Any help would be greatly appreciated!

Thanks