We built this process for new employees:
HR submits new employee ticket that get auto assigned to our HR Coordinator "Tech"
Coordinator maintains a list of email addresses for everyone that needs to "do something" with the new employee request. The coordinator un-assigns the HR manager as the client and re-assigns the new employee's manager as the client. The coordinator then copy-and-pastes the list of email addresses into the BCC box on the ticket and does a "save and email." This is the notification to the key people that a new employee is coming in. The coordinator then UNchecks the BCC box and re-saves the ticket. This prevents each BCC recipient from receiving future email updates.
Each of the recipients receives their notification and performs whatever task they need. They reply to the ticket and and the coordinator reviews the updates. The coordinator will reach out to anyone that has not updated the ticket.
This way we only need 1 tech license for the new hire process.