Contact Group is 'greyed out' in Outlook 2011 and 2016 (Mac)

Step One: Locate the Outlook menu

Step Two: Click Preferences

Step Three: Locate Personal Settings

Step Four: Click General

Step Five: Under Folder list, clear the Hide On My Computer folders check box

Step Six: Enter a name for the contact group

Step Seven: Now you may add (+) contact emails

Step Eight: When finished, click Save and Close