@Aran Billen, Thanks for posting in Q&A. From your description, I know you want to set the iPad as shared iPad. And also let the Microsoft Entra user to sign in these devices.
Based on my researching, I find when you federate your organization’s Microsoft Entra instance in Apple Business or School Manager, a device user can sign in on a Shared iPad using their Microsoft Entra username and password. Here is a link with more details:
https://learn.microsoft.com/en-us/mem/intune/enrollment/device-enrollment-shared-ipad
You can try it and hope the above information can help.
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