When creating or editing a post or comment, you have the ability to Mention a User in the app. You may want to use the mention feature when you want to draw a specific users attention to your post.
You can mention a user...
...In the body of any post or comment:
To add the Mention to your post begin by typing their name with a Capital Letter in any text area or by adding the '@' sign and typing their first & last name. Members that match the spelling of their name will auto-populate as you type.
...At the bottom of the post in the 'Send Mention Notifications' field
Begin by typing their name in the 'Send Mention Notifications' towards the bottom of any post. To ensure they are tagged, you will want to click or tap on their name as the option appears or use your up/down arrows on your keyboard to scroll to the member's name. Once selected, hit enter.
Continue to add content or edit your post as needed. Once the post is published, the user you mentioned will receive a notification based on their preferences, but will not be subscribed to the post.