Hi,
Please make sure you have joined the Azure Active Directory.
When a Microsoft 365 user logs in Windows will periodically check to see if that user has a license which includes a Windows 10 Business subscription. If they do then Windows will automatically activate and register itself as Business edition
Please follow this instruction to set up devices for Microsoft 365 Business Premium users:
https://learn.microsoft.com/en-us/microsoft-365/business/set-up-windows-devices?view=o365-worldwide
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