As you type @username, the username and their icon will appear in bold. Click on that user name that appear and it will go into the comment box and be a hyperlink. Example:
@Anna Co (name full name with icon will appear) , Click on what appears - the user's name and icon. It will automatically go into the comment box. You can practice a few times. If it doesn't work, you can delete it from the comment box and try again. :) 5 years ago
