Automatically add contacts from emails (to or reply) into contacts list.

In Outlook 2010 and prior, it was simple to have Outlook automatically add people that you send an email to or reply to an email to your contacts list.  In Outlook 2011 for Mac, I can't for the life of me figure out how to do this!  I need to set it up for a client so that whenever they send an email to someone or reply to an email from someone it automatically gets added to their contacts list.

Please advise - Thank you.