How to Flag a Contact in Outlook 2013
With the Contacts screen open, right-click the contact you want to flag.
A shortcut menu appears.
Choose Follow Up.
The Follow Up menu appears.
Choose the date you plan to follow up with the contact you chose.
Your choices include Today, Tomorrow, This Week, and Next Week. Sadly, When Heck Freezes Over isn’t included.
Flagging a contact for a specific day makes that contact’s name appear on your Outlook Calendar on the day you chose.
(Optional) Choose Add Reminder.
That makes a reminder window open and play a sound at the time you choose, just in case you have big reasons to avoid talking to that person. A reminder is Outlook’s way of telling you to get it over with.