This help section is about creating template messages or letters (other than for your initial appointment notification or appointment reminders - those are handed via the default appointment notifications and reminders). You can easily pull those templated messages that you build into an encounter note, email message area, or other plain text areas in Cerbo.
You may also add the specific patient's name as a text variable - click on View Available Variables at the upper right of the message panel to see text variables, and click on the desired variable to insert it into your message. (Ignore the Actions part at the bottom - this is for charting templates only.) Click +Add.
To insert your template message into an email or secure message, simply start typing the name or nickname into the body of the email or secure message, and select from the list of suggested matches that appear to the left.