Hi @anamosa - pls refer to this [link](lhttps://www.jamf.com/jamf-nation/discussions/30505/totally-new-to-jamf-mojave-upgrade)

Also, these are two good articles that talk about startosinstall's usage
https://support.apple.com/en-us/HT208020
https://derflounder.wordpress.com/2017/09/26/using-the-macos-high-sierra-os-installers-startosinstall-tool-to-install-additional-packages-as-post-upgrade-tasks/

This article may help:
https://www.jamf.com/blog/reinstall-a-clean-macos-with-one-button/