

@AzureApprentice-3319 Thanks for posting in our Q&A.
For this issue, I have done a lot of research. I find that apple support Manage macOS updates with Mobile Device Management (MDM) in the following article.
https://support.apple.com/en-us/HT211951
However, currently, intune doesn't support automatically update system in macOS devices. Given this situation, it is suggested to post this requirement in intune uservoice. This is a place to collect customers' requirements and problems.
https://microsoftintune.uservoice.com/forums/291681-ideas
Thanks for understanding and have a nice day.
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