Open Outlook
Select your Contacts folder
Change your VIEW to PHONE LIST
Right-click on your title bar (Gray bar)
Select FIELD CHOOSER
Change "Frequently-used Fields" to
"All Contact Fields"
Scroll down to "Private"
Drag "Private" onto the title bar and drop it
between one of the fields
Now you can just click the box to turn on the
check mark next to each contact.