Quickly subscribe and notify your collaborators directly in the comments by typing @ and then the user's name or member group name. You can mention members and member groups in any comments across the system. Mentioning your colleagues in comments will automatically subscribe them to the document and send them a notification.
To mention a member or member group, simply navigate to the comment section of the information you wish to subscribe them to. Then type your comment along with @user's name. Once you begin to type the user's name, a list of workspace members and member groups will begin to populate, and you can select the desired user from there.