The notify screen remains as the active window and prevents user interaction with the computer until quit. Quitting the notify screen does not stop the process of any scripts executed with the ScriptPath key nor any policies that may be executed by Jamf Pro when initiated with a standard or custom trigger.
The final step in the onboarding process should quit the notify screen with a command similar to:
echo "Command: Quit" >> /var/tmp/depnotify.log
For debugging or testing purposes, the notify screen can be terminated with the keyboard combination of Control-Command-X.