For certain processes you may want to create child tickets with the description as an internal note (private comment). To set this up, we'll need a target and a trigger:
Settings > Extensions > Add Target > Create HTTP Target
Title: "MPM Make Child Ticket First Comment Private"
Replace "youraccount" with your actual Zendesk subdomain.
Content Type: JSON
Basic Authentication: Enabled (checked)
Username: firstname.lastname@example.org/token (this is your Zendesk admin email followed by /token)
Password: Your Zendesk API Key (API > Add New Token)
Settings > Triggers > Add Trigger
Ticket is... Created
Tags contains... at least one of the following... mpm_child_ticket
Under Actions, select/enter the following:
Notifications: Notify target
Target: "MPM Make Child Ticket First Comment Private"