Hi
Please refer: http://www.wpbeginner.com/beginners-guide/how-to-create-a-private-post-in-wordpress/
section “Creating a Private Post or Private Page in WordPress”:
On the post edit screen, you need to click on the ‘Edit’ link next to the ‘Visibility’ option in ‘Publish’ meta box.

You will now see options to make a post sticky, password protected, or private. Go ahead and select private and then click the OK button to continue.

Regards!
Bwsm – uiueux.com – Twitter – Facebook