@Twan Clemens Thank you for confirming on same.
Please take a look here for the supported settings to manage Windows Update for Business via Endpoint Manager
https://learn.microsoft.com/en-us/mem/intune/fundamentals/azure-virtual-desktop-multi-session#windows-update-for-business
Scheduled starting of VMs can be achieved by using either custom Azure Automation, or our new Autoscale service.
Azure Virtual Desktop session host autoscale preview | Microsoft Learn
Hope it helps!!!
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