Cortex allows you to mention another Cortex user in a comment which will then notify that user.
You can mention users when you're adding a comment when you first create a task, and later on, even after the task is created.
All you have to do is Tap the "@" key and then start typing the users name (without spaces)

When you see the user you want to mention, Tap their listing and their name will turn green in the comment.

Then when you save the comment, they'll get a notification and a link to open the comment up to review it.
NOTES:
- Once you Tap on a link to open a comment, if you Tap on the patients name you will be taken to the patients Cortex screen