Hello Shanooj, Thank you for posting in Q&A forum.
It is normal that there is no "add work or school account" option in Windows Server 2019, and this option is also not available in my Windows Server 2019 because it is not set in the server and only in the client. You can try other methods to achieve the settings you want.
Here is a similar thread for your reference. https://learn.microsoft.com/en-us/answers/questions/302997/how-to-add-work-or-school-account-in-settings-)accacc) Other reference. https://support.microsoft.com/en-us/account-billing/join-your-work-device-to-your-work-or-school-network-ef4d6adb-5095-4e51-829e-5457430f3973#:~:text=Open%20Settings%2C%20and%20then%20select%20Accounts.%20Select%20Access,select%20Join%20this%20device%20to%20Azure%20Active%20Directory. I hope the information above is helpful. If you have any questions or concerns, please feel free to let us know. Best Regards, Daisy Zhou
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